CVE-2020-10957

high
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
8.0

Description

In Dovecot before 2.3.10.1, unauthenticated sending of malformed parameters to a NOOP command causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp.

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-2020-10957

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-10957.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202005-9

OS impact

OSVersionStatusFixed in
arch archfixed2.3.10.1-1
suse slesaffected
debian debianbookwormfixed1:2.3.10.1+dfsg1-1
debian debianbullseyefixed1:2.3.10.1+dfsg1-1
debian debianforkyfixed1:2.3.10.1+dfsg1-1
debian debiansidfixed1:2.3.10.1+dfsg1-1
debian debiantrixiefixed1:2.3.10.1+dfsg1-1

References

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