CVE-2020-12823

low
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
2.5

Description

OpenConnect 8.09 has a buffer overflow, causing a denial of service (application crash) or possibly unspecified other impact, via crafted certificate data to get_cert_name in gnutls.c.

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-2020-12823

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-12823.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202005-11

OS impact

OSVersionStatusFixed in
arch archfixed1:8.10-1
suse slesaffected
debian debianbookwormfixed8.10-1
debian debianbullseyefixed8.10-1
debian debianforkyfixed8.10-1
debian debiansidfixed8.10-1
debian debiantrixiefixed8.10-1

References

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