UpHeron
All vulnerabilities

Servers and applications

CVE-2011-1764

Format string vulnerability in the dkim_exim_verify_finish function in src/dkim.c in Exim before 4.76 might allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in data used in DKIM logging, as demonstrated by an identity field containing a % (percent) character.

Severity
High 7.5
Published
5 Oct 2011
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
3.9% in the next 30 daysHigher than 90% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Format string (CWE-134)
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
EximServers and applications · cpe:a:exim:exim
  • Version 4.74
  • Version 4.73
  • Version 4.72
  • Version 4.71
All 70 release lines
  • Every version up to 4.75
  • Version 2.10
  • Version 2.11
  • Version 2.12
  • Version 3.00
  • Version 3.01
  • Version 3.02
  • Version 3.03
  • Version 3.10
  • Version 3.11
  • Version 3.12
  • Version 3.13
  • Version 3.14
  • Version 3.15
  • Version 3.16
  • Version 3.20
  • Version 3.21
  • Version 3.22
  • Version 3.30
  • Version 3.31
  • Version 3.32
  • Version 3.33
  • Version 3.34
  • Version 3.35
  • Version 3.36
  • Version 4.00
  • Version 4.01
  • Version 4.02
  • Version 4.03
  • Version 4.04
  • Version 4.05
  • Version 4.10
  • Version 4.11
  • Version 4.12
  • Version 4.14
  • Version 4.20
  • Version 4.21
  • Version 4.22
  • Version 4.23
  • Version 4.24
  • Version 4.30
  • Version 4.31
  • Version 4.32
  • Version 4.33
  • Version 4.34
  • Version 4.40
  • Version 4.41
  • Version 4.42
  • Version 4.43
  • Version 4.44
  • Version 4.50
  • Version 4.51
  • Version 4.52
  • Version 4.53
  • Version 4.54
  • Version 4.60
  • Version 4.61
  • Version 4.62
  • Version 4.63
  • Version 4.64
  • Version 4.65
  • Version 4.66
  • Version 4.67
  • Version 4.68
  • Version 4.69
  • Version 4.70
  • Version 4.71
  • Version 4.72
  • Version 4.73
  • Version 4.74

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-1764
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-1764