Vulnerability Details CVE-2020-11996
A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.228
EPSS Ranking 95.6%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
Products affected by CVE-2020-11996
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cpe:2.3:a:apache:tomcat:10.0.0
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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:8.5.51
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cpe:2.3:a:apache:tomcat:8.5.52
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cpe:2.3:a:apache:tomcat:8.5.53
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cpe:2.3:a:apache:tomcat:8.5.54
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cpe:2.3:a:apache:tomcat:8.5.55
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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:9.0.31
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cpe:2.3:a:apache:tomcat:9.0.32
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cpe:2.3:a:apache:tomcat:9.0.33
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cpe:2.3:a:apache:tomcat:9.0.34
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cpe:2.3:a:apache:tomcat:9.0.35
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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:oncommand_system_manager:3.0
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cpe:2.3:a:netapp:oncommand_system_manager:3.1.3
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cpe:2.3:a:oracle:mysql_enterprise_monitor:-
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cpe:2.3:a:oracle:mysql_enterprise_monitor:2.3.14
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.0.25
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.0.4
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.0
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.1
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.2
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.3
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.3.7856
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.4
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.5
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.6
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.6.8003
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.1.7
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.0
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.1
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.10
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.1182
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.2
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.3
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.4
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.5
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.6
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.7
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.8
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.8.2223
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.2.9
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.0
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.1
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.2
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.2.1162
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.3
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.4
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.4.3247
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.5
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.6
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.6.3293
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.7
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.8
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.3.9
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.0
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.1
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.10
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.2
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.2.4181
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.3
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.4
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.4.4226
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.5
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.6
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.7
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.7.4297
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.8
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.9
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cpe:2.3:a:oracle:mysql_enterprise_monitor:3.4.9.4237
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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:4.1
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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:8.0.21
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cpe:2.3:a:oracle:mysql_enterprise_monitor:8.0.3
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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:20.12
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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:20.6
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cpe:2.3:a:oracle:siebel_ui_framework:20.8
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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: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:20.04
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:opensuse:leap:15.1
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cpe:2.3:o:opensuse:leap:15.2