UpHeron
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Servers and applications

CVE-2019-11500

In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because '\0' characters are mishandled, and can lead to out-of-bounds writes and remote code execution.

Severity
Critical 9.8
Published
29 Aug 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.2.36.4, 2.3.7.2
Exploit chance
62% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
DovecotServers and applications · cpe:a:dovecot:dovecot
  • Every version before 2.2.36.4
  • From 2.3.0 before 2.3.7.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-11500
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-11500