UpHeron
All vulnerabilities

Servers and applications

CVE-2023-42116

Exim SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of NTLM challenge requests. The issue results from the lack of proper validation of the length of…

Severity
Critical 9.8
Published
3 May 2024
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.96.1
Sources
NVD

Affected software

SoftwareAffected versions
EximServers and applications · cpe:a:exim:exim
  • Every version before 4.96.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-42116
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-42116