Vulnerability Details CVE-2020-1935
In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 65.7%
CVSS Severity
CVSS v3 Score 4.8
CVSS v2 Score 5.8
Products affected by CVE-2020-1935
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cpe:2.3:a:apache:tomcat:7.0.0
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cpe:2.3:a:apache:tomcat:7.0.1
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cpe:2.3:a:apache:tomcat:7.0.10
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cpe:2.3:a:apache:tomcat:7.0.11
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cpe:2.3:a:apache:tomcat:7.0.12
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cpe:2.3:a:apache:tomcat:7.0.13
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cpe:2.3:a:apache:tomcat:7.0.14
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cpe:2.3:a:apache:tomcat:7.0.15
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cpe:2.3:a:apache:tomcat:7.0.16
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cpe:2.3:a:apache:tomcat:7.0.17
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cpe:2.3:a:apache:tomcat:7.0.18
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cpe:2.3:a:apache:tomcat:7.0.19
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cpe:2.3:a:apache:tomcat:7.0.2
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cpe:2.3:a:apache:tomcat:7.0.20
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cpe:2.3:a:apache:tomcat:7.0.21
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cpe:2.3:a:apache:tomcat:7.0.22
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cpe:2.3:a:apache:tomcat:7.0.23
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cpe:2.3:a:apache:tomcat:7.0.24
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cpe:2.3:a:apache:tomcat:7.0.25
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cpe:2.3:a:apache:tomcat:7.0.26
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cpe:2.3:a:apache:tomcat:7.0.27
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cpe:2.3:a:apache:tomcat:7.0.28
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cpe:2.3:a:apache:tomcat:7.0.29
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cpe:2.3:a:apache:tomcat:7.0.3
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cpe:2.3:a:apache:tomcat:7.0.30
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cpe:2.3:a:apache:tomcat:7.0.31
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cpe:2.3:a:apache:tomcat:7.0.32
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cpe:2.3:a:apache:tomcat:7.0.33
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cpe:2.3:a:apache:tomcat:7.0.34
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cpe:2.3:a:apache:tomcat:7.0.35
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cpe:2.3:a:apache:tomcat:7.0.36
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cpe:2.3:a:apache:tomcat:7.0.37
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cpe:2.3:a:apache:tomcat:7.0.38
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cpe:2.3:a:apache:tomcat:7.0.39
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cpe:2.3:a:apache:tomcat:7.0.4
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cpe:2.3:a:apache:tomcat:7.0.40
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cpe:2.3:a:apache:tomcat:7.0.41
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cpe:2.3:a:apache:tomcat:7.0.42
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cpe:2.3:a:apache:tomcat:7.0.43
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cpe:2.3:a:apache:tomcat:7.0.44
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cpe:2.3:a:apache:tomcat:7.0.45
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cpe:2.3:a:apache:tomcat:7.0.46
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cpe:2.3:a:apache:tomcat:7.0.47
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cpe:2.3:a:apache:tomcat:7.0.48
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cpe:2.3:a:apache:tomcat:7.0.49
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cpe:2.3:a:apache:tomcat:7.0.5
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cpe:2.3:a:apache:tomcat:7.0.50
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cpe:2.3:a:apache:tomcat:7.0.51
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cpe:2.3:a:apache:tomcat:7.0.52
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cpe:2.3:a:apache:tomcat:7.0.53
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cpe:2.3:a:apache:tomcat:7.0.54
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cpe:2.3:a:apache:tomcat:7.0.55
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cpe:2.3:a:apache:tomcat:7.0.56
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cpe:2.3:a:apache:tomcat:7.0.57
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cpe:2.3:a:apache:tomcat:7.0.58
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cpe:2.3:a:apache:tomcat:7.0.59
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cpe:2.3:a:apache:tomcat:7.0.6
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cpe:2.3:a:apache:tomcat:7.0.60
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cpe:2.3:a:apache:tomcat:7.0.61
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cpe:2.3:a:apache:tomcat:7.0.62
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cpe:2.3:a:apache:tomcat:7.0.63
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cpe:2.3:a:apache:tomcat:7.0.64
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cpe:2.3:a:apache:tomcat:7.0.65
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cpe:2.3:a:apache:tomcat:7.0.66
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cpe:2.3:a:apache:tomcat:7.0.67
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cpe:2.3:a:apache:tomcat:7.0.68
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cpe:2.3:a:apache:tomcat:7.0.69
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cpe:2.3:a:apache:tomcat:7.0.7
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cpe:2.3:a:apache:tomcat:7.0.70
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cpe:2.3:a:apache:tomcat:7.0.71
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cpe:2.3:a:apache:tomcat:7.0.72
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cpe:2.3:a:apache:tomcat:7.0.73
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cpe:2.3:a:apache:tomcat:7.0.74
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cpe:2.3:a:apache:tomcat:7.0.75
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cpe:2.3:a:apache:tomcat:7.0.76
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cpe:2.3:a:apache:tomcat:7.0.77
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cpe:2.3:a:apache:tomcat:7.0.78
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cpe:2.3:a:apache:tomcat:7.0.79
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cpe:2.3:a:apache:tomcat:7.0.8
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cpe:2.3:a:apache:tomcat:7.0.80
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cpe:2.3:a:apache:tomcat:7.0.81
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cpe:2.3:a:apache:tomcat:7.0.82
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cpe:2.3:a:apache:tomcat:7.0.83
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cpe:2.3:a:apache:tomcat:7.0.84
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cpe:2.3:a:apache:tomcat:7.0.85
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cpe:2.3:a:apache:tomcat:7.0.86
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cpe:2.3:a:apache:tomcat:7.0.87
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cpe:2.3:a:apache:tomcat:7.0.88
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cpe:2.3:a:apache:tomcat:7.0.89
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cpe:2.3:a:apache:tomcat:7.0.9
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cpe:2.3:a:apache:tomcat:7.0.90
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cpe:2.3:a:apache:tomcat:7.0.91
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cpe:2.3:a:apache:tomcat:7.0.92
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cpe:2.3:a:apache:tomcat:7.0.93
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cpe:2.3:a:apache:tomcat:7.0.94
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cpe:2.3:a:apache:tomcat:7.0.95
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cpe:2.3:a:apache:tomcat:7.0.96
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cpe:2.3:a:apache:tomcat:7.0.97
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cpe:2.3:a:apache:tomcat:7.0.98
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cpe:2.3:a:apache:tomcat:7.0.99
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cpe:2.3:a:apache:tomcat:8.5.0
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cpe:2.3:a:apache:tomcat:8.5.1
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cpe:2.3:a:apache:tomcat:8.5.10
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cpe:2.3:a:apache:tomcat:8.5.11
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cpe:2.3:a:apache:tomcat:8.5.12
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cpe:2.3:a:apache:tomcat:8.5.13
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cpe:2.3:a:apache:tomcat:8.5.14
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cpe:2.3:a:apache:tomcat:8.5.15
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cpe:2.3:a:apache:tomcat:8.5.16
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cpe:2.3:a:apache:tomcat:8.5.17
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cpe:2.3:a:apache:tomcat:8.5.18
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cpe:2.3:a:apache:tomcat:8.5.19
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cpe:2.3:a:apache:tomcat:8.5.2
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cpe:2.3:a:apache:tomcat:8.5.20
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cpe:2.3:a:apache:tomcat:8.5.21
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cpe:2.3:a:apache:tomcat:8.5.22
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cpe:2.3:a:apache:tomcat:8.5.23
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cpe:2.3:a:apache:tomcat:8.5.24
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cpe:2.3:a:apache:tomcat:8.5.25
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cpe:2.3:a:apache:tomcat:8.5.26
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cpe:2.3:a:apache:tomcat:8.5.27
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cpe:2.3:a:apache:tomcat:8.5.28
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cpe:2.3:a:apache:tomcat:8.5.29
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cpe:2.3:a:apache:tomcat:8.5.3
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cpe:2.3:a:apache:tomcat:8.5.30
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cpe:2.3:a:apache:tomcat:8.5.31
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cpe:2.3:a:apache:tomcat:8.5.32
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cpe:2.3:a:apache:tomcat:8.5.33
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cpe:2.3:a:apache:tomcat:8.5.34
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cpe:2.3:a:apache:tomcat:8.5.35
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cpe:2.3:a:apache:tomcat:8.5.36
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cpe:2.3:a:apache:tomcat:8.5.37
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cpe:2.3:a:apache:tomcat:8.5.38
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cpe:2.3:a:apache:tomcat:8.5.39
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cpe:2.3:a:apache:tomcat:8.5.4
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cpe:2.3:a:apache:tomcat:8.5.40
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cpe:2.3:a:apache:tomcat:8.5.41
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cpe:2.3:a:apache:tomcat:8.5.42
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cpe:2.3:a:apache:tomcat:8.5.43
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cpe:2.3:a:apache:tomcat:8.5.44
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cpe:2.3:a:apache:tomcat:8.5.45
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cpe:2.3:a:apache:tomcat:8.5.46
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cpe:2.3:a:apache:tomcat:8.5.47
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cpe:2.3:a:apache:tomcat:8.5.48
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cpe:2.3:a:apache:tomcat:8.5.49
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cpe:2.3:a:apache:tomcat:8.5.5
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cpe:2.3:a:apache:tomcat:8.5.50
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cpe:2.3:a:apache:tomcat:8.5.6
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cpe:2.3:a:apache:tomcat:8.5.7
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cpe:2.3:a:apache:tomcat:8.5.8
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cpe:2.3:a:apache:tomcat:8.5.9
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cpe:2.3:a:apache:tomcat:9.0.0
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cpe:2.3:a:apache:tomcat:9.0.1
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cpe:2.3:a:apache:tomcat:9.0.10
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cpe:2.3:a:apache:tomcat:9.0.11
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cpe:2.3:a:apache:tomcat:9.0.12
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cpe:2.3:a:apache:tomcat:9.0.13
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cpe:2.3:a:apache:tomcat:9.0.14
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cpe:2.3:a:apache:tomcat:9.0.15
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cpe:2.3:a:apache:tomcat:9.0.16
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cpe:2.3:a:apache:tomcat:9.0.17
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cpe:2.3:a:apache:tomcat:9.0.18
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cpe:2.3:a:apache:tomcat:9.0.19
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cpe:2.3:a:apache:tomcat:9.0.2
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cpe:2.3:a:apache:tomcat:9.0.20
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cpe:2.3:a:apache:tomcat:9.0.21
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cpe:2.3:a:apache:tomcat:9.0.22
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cpe:2.3:a:apache:tomcat:9.0.23
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cpe:2.3:a:apache:tomcat:9.0.24
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cpe:2.3:a:apache:tomcat:9.0.25
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cpe:2.3:a:apache:tomcat:9.0.26
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cpe:2.3:a:apache:tomcat:9.0.27
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cpe:2.3:a:apache:tomcat:9.0.28
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cpe:2.3:a:apache:tomcat:9.0.29
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cpe:2.3:a:apache:tomcat:9.0.3
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cpe:2.3:a:apache:tomcat:9.0.30
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cpe:2.3:a:apache:tomcat:9.0.4
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cpe:2.3:a:apache:tomcat:9.0.5
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cpe:2.3:a:apache:tomcat:9.0.6
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cpe:2.3:a:apache:tomcat:9.0.7
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cpe:2.3:a:apache:tomcat:9.0.8
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cpe:2.3:a:apache:tomcat:9.0.9
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cpe:2.3:a:netapp:data_availability_services:-
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cpe:2.3:a:netapp:oncommand_system_manager:3.0.0
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cpe:2.3:a:netapp:oncommand_system_manager:3.1
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cpe:2.3:a:netapp:oncommand_system_manager:3.1.1
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cpe:2.3:a:netapp:oncommand_system_manager:3.1.2
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cpe:2.3:a:netapp:oncommand_system_manager:3.1.3
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cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0
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cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.3
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cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.5
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cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6
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cpe:2.3:a:oracle:communications_element_manager:8.1.1
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cpe:2.3:a:oracle:communications_element_manager:8.2.0
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cpe:2.3:a:oracle:communications_element_manager:8.2.1
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cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.4.0
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cpe:2.3:a:oracle:health_sciences_empirica_inspections:1.0.1.2
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cpe:2.3:a:oracle:health_sciences_empirica_signal:7.3.3
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cpe:2.3:a:oracle:hospitality_guest_access:4.2.0
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cpe:2.3:a:oracle:hospitality_guest_access:4.2.1
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cpe:2.3:a:oracle:hyperion_infrastructure_technology:11.1.2.4
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cpe:2.3:a:oracle:instantis_enterprisetrack:17.1
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cpe:2.3:a:oracle:instantis_enterprisetrack:17.2
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cpe:2.3:a:oracle:instantis_enterprisetrack:17.3
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.0
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.0.5135
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.1
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.11.5331
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.12
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.2
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.3
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.4
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.4.5235
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.5
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.6
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.6.5281
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.7
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cpe:2.3:a:oracle:mysql_enterprise_monitor:4.0.8
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.0
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.0.8131
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.1
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.14
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.18.1217
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.2
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.2.8191
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.20
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.3
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cpe:2.3:a:oracle:retail_order_broker:15.0
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cpe:2.3:a:oracle:siebel_ui_framework:-
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cpe:2.3:a:oracle:siebel_ui_framework:16.0
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cpe:2.3:a:oracle:siebel_ui_framework:16.1
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cpe:2.3:a:oracle:siebel_ui_framework:17.0
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cpe:2.3:a:oracle:siebel_ui_framework:18.0
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cpe:2.3:a:oracle:siebel_ui_framework:18.10
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cpe:2.3:a:oracle:siebel_ui_framework:18.11
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cpe:2.3:a:oracle:siebel_ui_framework:18.7
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cpe:2.3:a:oracle:siebel_ui_framework:18.8
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cpe:2.3:a:oracle:siebel_ui_framework:18.9
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cpe:2.3:a:oracle:siebel_ui_framework:19.0
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cpe:2.3:a:oracle:siebel_ui_framework:19.10
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cpe:2.3:a:oracle:siebel_ui_framework:19.7
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cpe:2.3:a:oracle:siebel_ui_framework:19.8
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cpe:2.3:a:oracle:siebel_ui_framework:20.1
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cpe:2.3:a:oracle:siebel_ui_framework:20.2
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cpe:2.3:a:oracle:siebel_ui_framework:20.5
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cpe:2.3:a:oracle:siebel_ui_framework:8.1.1
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cpe:2.3:a:oracle:siebel_ui_framework:8.2.2
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cpe:2.3:a:oracle:transportation_management:6.3.7
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cpe:2.3:a:oracle:workload_manager:12.2.0.1
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cpe:2.3:a:oracle:workload_manager:18c
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cpe:2.3:a:oracle:workload_manager:19c
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:opensuse:leap:15.1