UpHeron
All vulnerabilities

Servers and applications

CVE-2020-28020

Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction.

Severity
Critical 9.8
Published
6 May 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.92
Sources
NVD

Affected software

SoftwareAffected versions
EximServers and applications · cpe:a:exim:exim
  • From 4.00 before 4.92

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-28020
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-28020