UpHeron
All vulnerabilities

Servers and applications

CVE-2020-28017

Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow in receive_add_recipient via an e-mail message with fifty million recipients. NOTE: remote exploitation may be difficult because of resource consumption.

Severity
Critical 9.8
Published
6 May 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.94.1
Sources
NVD

Affected software

SoftwareAffected versions
EximServers and applications · cpe:a:exim:exim
  • Every version before 4.94.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-28017
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-28017