CVE-2021-1405

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

Description

A vulnerability in the email parsing module in Clam AntiVirus (ClamAV) Software version 0.103.1 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper variable initialization that may result in an NULL pointer read. An attacker could exploit this vulnerability by sending a crafted email to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-1405.html

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-1405

OS impact

OSVersionStatusFixed in
arch archfixed0.103.2-1
debian debianbookwormfixed0.103.2+dfsg-1
debian debianbullseyefixed0.103.2+dfsg-1
debian debianforkyfixed0.103.2+dfsg-1
debian debiansidfixed0.103.2+dfsg-1
debian debiantrixiefixed0.103.2+dfsg-1
suse slesaffected

References

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