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Vulnerability record · CVE-2022-20792 · published 10 August 2022

CVE-2022-20792: Clamav out-of-bounds read vulnerability

Clamav · Clamav

A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated, local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.

7.8 CVSS 3.1 High EPSS 0.57% · top 54.5% CWE-125 · Out-of-bounds readCWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated, local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html Release NotesVendor Advisory
https://security.gentoo.org/glsa/202310-01
https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html Release NotesVendor Advisory
https://security.gentoo.org/glsa/202310-01

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-20792), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.