All vulnerabilities

Servers and applications

CVE-2020-28025

Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory.

Severity
High 7.5
Published
6 May 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.94.2
Sources
NVD

Affected software

SoftwareAffected versions
EximServers and applications · cpe:a:exim:exim
  • From 4.00 before 4.94.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-28025
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-28025