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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-40686

In Exim before 4.99.2, when utf8 operators are enabled, there is an out-of-bounds read if large UTF-8 trailing characters are present (malformed UTF-8 header data). Information might be divulged within an error message produced during handling of an unrelated e-mail message.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.2%
CVSS Severity
CVSS v3 Score 3.7
Products affected by CVE-2026-40686
  • Exim » Exim » Version: N/A
    cpe:2.3:a:exim:exim:-
  • Exim » Exim » Version: 2.10
    cpe:2.3:a:exim:exim:2.10
  • Exim » Exim » Version: 2.11
    cpe:2.3:a:exim:exim:2.11
  • Exim » Exim » Version: 2.12
    cpe:2.3:a:exim:exim:2.12
  • Exim » Exim » Version: 3.00
    cpe:2.3:a:exim:exim:3.00
  • Exim » Exim » Version: 3.01
    cpe:2.3:a:exim:exim:3.01
  • Exim » Exim » Version: 3.02
    cpe:2.3:a:exim:exim:3.02
  • Exim » Exim » Version: 3.03
    cpe:2.3:a:exim:exim:3.03
  • Exim » Exim » Version: 3.10
    cpe:2.3:a:exim:exim:3.10
  • Exim » Exim » Version: 3.11
    cpe:2.3:a:exim:exim:3.11
  • Exim » Exim » Version: 3.12
    cpe:2.3:a:exim:exim:3.12
  • Exim » Exim » Version: 3.13
    cpe:2.3:a:exim:exim:3.13
  • Exim » Exim » Version: 3.14
    cpe:2.3:a:exim:exim:3.14
  • Exim » Exim » Version: 3.15
    cpe:2.3:a:exim:exim:3.15
  • Exim » Exim » Version: 3.16
    cpe:2.3:a:exim:exim:3.16
  • Exim » Exim » Version: 3.20
    cpe:2.3:a:exim:exim:3.20
  • Exim » Exim » Version: 3.21
    cpe:2.3:a:exim:exim:3.21
  • Exim » Exim » Version: 3.22
    cpe:2.3:a:exim:exim:3.22
  • Exim » Exim » Version: 3.30
    cpe:2.3:a:exim:exim:3.30
  • Exim » Exim » Version: 3.31
    cpe:2.3:a:exim:exim:3.31
  • Exim » Exim » Version: 3.32
    cpe:2.3:a:exim:exim:3.32
  • Exim » Exim » Version: 3.33
    cpe:2.3:a:exim:exim:3.33
  • Exim » Exim » Version: 3.34
    cpe:2.3:a:exim:exim:3.34
  • Exim » Exim » Version: 3.35
    cpe:2.3:a:exim:exim:3.35
  • Exim » Exim » Version: 3.36
    cpe:2.3:a:exim:exim:3.36
  • Exim » Exim » Version: 4.00
    cpe:2.3:a:exim:exim:4.00
  • Exim » Exim » Version: 4.01
    cpe:2.3:a:exim:exim:4.01
  • Exim » Exim » Version: 4.02
    cpe:2.3:a:exim:exim:4.02
  • Exim » Exim » Version: 4.03
    cpe:2.3:a:exim:exim:4.03
  • Exim » Exim » Version: 4.04
    cpe:2.3:a:exim:exim:4.04
  • Exim » Exim » Version: 4.05
    cpe:2.3:a:exim:exim:4.05
  • Exim » Exim » Version: 4.10
    cpe:2.3:a:exim:exim:4.10
  • Exim » Exim » Version: 4.11
    cpe:2.3:a:exim:exim:4.11
  • Exim » Exim » Version: 4.12
    cpe:2.3:a:exim:exim:4.12
  • Exim » Exim » Version: 4.14
    cpe:2.3:a:exim:exim:4.14
  • Exim » Exim » Version: 4.20
    cpe:2.3:a:exim:exim:4.20
  • Exim » Exim » Version: 4.21
    cpe:2.3:a:exim:exim:4.21
  • Exim » Exim » Version: 4.22
    cpe:2.3:a:exim:exim:4.22
  • Exim » Exim » Version: 4.23
    cpe:2.3:a:exim:exim:4.23
  • Exim » Exim » Version: 4.24
    cpe:2.3:a:exim:exim:4.24
  • Exim » Exim » Version: 4.30
    cpe:2.3:a:exim:exim:4.30
  • Exim » Exim » Version: 4.31
    cpe:2.3:a:exim:exim:4.31
  • Exim » Exim » Version: 4.32
    cpe:2.3:a:exim:exim:4.32
  • Exim » Exim » Version: 4.33
    cpe:2.3:a:exim:exim:4.33
  • Exim » Exim » Version: 4.34
    cpe:2.3:a:exim:exim:4.34
  • Exim » Exim » Version: 4.40
    cpe:2.3:a:exim:exim:4.40
  • Exim » Exim » Version: 4.41
    cpe:2.3:a:exim:exim:4.41
  • Exim » Exim » Version: 4.42
    cpe:2.3:a:exim:exim:4.42
  • Exim » Exim » Version: 4.43
    cpe:2.3:a:exim:exim:4.43
  • Exim » Exim » Version: 4.44
    cpe:2.3:a:exim:exim:4.44
  • Exim » Exim » Version: 4.50
    cpe:2.3:a:exim:exim:4.50
  • Exim » Exim » Version: 4.51
    cpe:2.3:a:exim:exim:4.51
  • Exim » Exim » Version: 4.52
    cpe:2.3:a:exim:exim:4.52
  • Exim » Exim » Version: 4.53
    cpe:2.3:a:exim:exim:4.53
  • Exim » Exim » Version: 4.54
    cpe:2.3:a:exim:exim:4.54
  • Exim » Exim » Version: 4.60
    cpe:2.3:a:exim:exim:4.60
  • Exim » Exim » Version: 4.61
    cpe:2.3:a:exim:exim:4.61
  • Exim » Exim » Version: 4.62
    cpe:2.3:a:exim:exim:4.62
  • Exim » Exim » Version: 4.63
    cpe:2.3:a:exim:exim:4.63
  • Exim » Exim » Version: 4.64
    cpe:2.3:a:exim:exim:4.64
  • Exim » Exim » Version: 4.65
    cpe:2.3:a:exim:exim:4.65
  • Exim » Exim » Version: 4.66
    cpe:2.3:a:exim:exim:4.66
  • Exim » Exim » Version: 4.67
    cpe:2.3:a:exim:exim:4.67
  • Exim » Exim » Version: 4.68
    cpe:2.3:a:exim:exim:4.68
  • Exim » Exim » Version: 4.69
    cpe:2.3:a:exim:exim:4.69
  • Exim » Exim » Version: 4.70
    cpe:2.3:a:exim:exim:4.70
  • Exim » Exim » Version: 4.71
    cpe:2.3:a:exim:exim:4.71
  • Exim » Exim » Version: 4.72
    cpe:2.3:a:exim:exim:4.72
  • Exim » Exim » Version: 4.73
    cpe:2.3:a:exim:exim:4.73
  • Exim » Exim » Version: 4.74
    cpe:2.3:a:exim:exim:4.74
  • Exim » Exim » Version: 4.75
    cpe:2.3:a:exim:exim:4.75
  • Exim » Exim » Version: 4.76
    cpe:2.3:a:exim:exim:4.76
  • Exim » Exim » Version: 4.77
    cpe:2.3:a:exim:exim:4.77
  • Exim » Exim » Version: 4.80
    cpe:2.3:a:exim:exim:4.80
  • Exim » Exim » Version: 4.80.1
    cpe:2.3:a:exim:exim:4.80.1
  • Exim » Exim » Version: 4.82
    cpe:2.3:a:exim:exim:4.82
  • Exim » Exim » Version: 4.82.1
    cpe:2.3:a:exim:exim:4.82.1
  • Exim » Exim » Version: 4.84.2
    cpe:2.3:a:exim:exim:4.84.2
  • Exim » Exim » Version: 4.85
    cpe:2.3:a:exim:exim:4.85
  • Exim » Exim » Version: 4.85.1
    cpe:2.3:a:exim:exim:4.85.1
  • Exim » Exim » Version: 4.85.2
    cpe:2.3:a:exim:exim:4.85.2
  • Exim » Exim » Version: 4.86
    cpe:2.3:a:exim:exim:4.86
  • Exim » Exim » Version: 4.86.1
    cpe:2.3:a:exim:exim:4.86.1
  • Exim » Exim » Version: 4.86.2
    cpe:2.3:a:exim:exim:4.86.2
  • Exim » Exim » Version: 4.87
    cpe:2.3:a:exim:exim:4.87
  • Exim » Exim » Version: 4.87.1
    cpe:2.3:a:exim:exim:4.87.1
  • Exim » Exim » Version: 4.88
    cpe:2.3:a:exim:exim:4.88
  • Exim » Exim » Version: 4.89
    cpe:2.3:a:exim:exim:4.89
  • Exim » Exim » Version: 4.89.1
    cpe:2.3:a:exim:exim:4.89.1
  • Exim » Exim » Version: 4.90
    cpe:2.3:a:exim:exim:4.90
  • Exim » Exim » Version: 4.90.0.22
    cpe:2.3:a:exim:exim:4.90.0.22
  • Exim » Exim » Version: 4.90.0.27
    cpe:2.3:a:exim:exim:4.90.0.27
  • Exim » Exim » Version: 4.90.1
    cpe:2.3:a:exim:exim:4.90.1
  • Exim » Exim » Version: 4.91
    cpe:2.3:a:exim:exim:4.91
  • Exim » Exim » Version: 4.92
    cpe:2.3:a:exim:exim:4.92
  • Exim » Exim » Version: 4.92.1
    cpe:2.3:a:exim:exim:4.92.1
  • Exim » Exim » Version: 4.92.2
    cpe:2.3:a:exim:exim:4.92.2
  • Exim » Exim » Version: 4.93
    cpe:2.3:a:exim:exim:4.93
  • Exim » Exim » Version: 4.93.0.4
    cpe:2.3:a:exim:exim:4.93.0.4
  • Exim » Exim » Version: 4.93.0.4-3.1
    cpe:2.3:a:exim:exim:4.93.0.4-3.1
  • Exim » Exim » Version: 4.94
    cpe:2.3:a:exim:exim:4.94
  • Exim » Exim » Version: 4.94.1
    cpe:2.3:a:exim:exim:4.94.1
  • Exim » Exim » Version: 4.94.2
    cpe:2.3:a:exim:exim:4.94.2
  • Exim » Exim » Version: 4.95
    cpe:2.3:a:exim:exim:4.95
  • Exim » Exim » Version: 4.96
    cpe:2.3:a:exim:exim:4.96
  • Exim » Exim » Version: 4.96.1
    cpe:2.3:a:exim:exim:4.96.1
  • Exim » Exim » Version: 4.96.2
    cpe:2.3:a:exim:exim:4.96.2
  • Exim » Exim » Version: 4.97
    cpe:2.3:a:exim:exim:4.97
  • Exim » Exim » Version: 4.97.1
    cpe:2.3:a:exim:exim:4.97.1
  • Exim » Exim » Version: 4.98
    cpe:2.3:a:exim:exim:4.98
  • Exim » Exim » Version: 4.98.1
    cpe:2.3:a:exim:exim:4.98.1
  • Exim » Exim » Version: 4.98.2
    cpe:2.3:a:exim:exim:4.98.2
  • Exim » Exim » Version: 4.99
    cpe:2.3:a:exim:exim:4.99
  • Exim » Exim » Version: 4.99.1
    cpe:2.3:a:exim:exim:4.99.1


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