CVE-2019-11500

critical
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
9.5

Description

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.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-11500

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2019-11500.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201908-18

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201908-19

OS impact

OSVersionStatusFixed in
arch archfixed0.5.7.2-1
suse slesaffected
debian debianbookwormfixed1:2.3.7.2-1
debian debianbullseyefixed1:2.3.7.2-1
debian debianforkyfixed1:2.3.7.2-1
debian debiansidfixed1:2.3.7.2-1
debian debiantrixiefixed1:2.3.7.2-1

References

Verify integrity in audit chain (admin only). AS-IS.