CVE-2021-29948

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

Description

Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local process or user is replacing the file. This vulnerability affects Thunderbird < 78.10.

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-2021-29948

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-29948.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202104-4

OS impact

OSVersionStatusFixed in
arch archfixed78.10.0-1
suse slesaffected
debian debianbookwormfixed1:78.10.0-1
debian debianbullseyefixed1:78.10.0-1
debian debianforkyfixed1:78.10.0-1
debian debiansidfixed1:78.10.0-1
debian debiantrixiefixed1:78.10.0-1

References

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