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Servers and applications

CVE-2019-16928

Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 3 Mar 2022.

Severity
Critical 9.8
Published
27 Sept 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
42% in the next 30 daysHigher than 98% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
EximServers and applications · cpe:a:exim:exim
  • From 4.92 up to 4.92.2

Known exploited

CISA name
Exim Out-of-bounds Write Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
17 Mar 2022
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-16928
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-16928