All vulnerabilities

Servers and applications

CVE-2016-9963

Exim before 4.87.1 might allow remote attackers to obtain the private DKIM signing key via vectors related to log files and bounce messages.

Severity
Medium 5.9
Published
1 Feb 2017
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
3.1% in the next 30 daysHigher than 87% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-320
Attack
Over the network · Only under certain conditions · No login needed · No user action needed
Attacker can
Read data
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
EximServers and applications · cpe:a:exim:exim
  • Every version up to 4.87

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-9963
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-9963