Debian dla-4852 : clamav - security update

high Nessus Plugin ID 371251

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4852 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4852-1 [email protected] https://www.debian.org/lts/security/ Emilio Pozuelo Monfort October 23, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : clamav Version : 1.4.6+dfsg-0+deb12u1 CVE ID : CVE-2026-20031 CVE-2026-20213 CVE-2026-20214 CVE-2026-20215 CVE-2026-20216 CVE-2026-20217 CVE-2026-20243 CVE-2026-20244 CVE-2026-20339 CVE-2026-20345 CVE-2026-20346 CVE-2026-20347 CVE-2026-20348 Debian Bug : 1043428 1092882 1103001 1120998 1123913 1141347

Several vulnerabilities have been found in the ClamAV antivirus toolkit, which could result in denial of service or possibly other unspecified impact when processing maliciously crafted files.

For Debian 12 bookworm, these problems have been fixed in version 1.4.6+dfsg-0+deb12u1.

We recommend that you upgrade your clamav packages.

For the detailed security status of clamav please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/clamav

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the clamav packages.

Plugin Details

Severity: High

ID: 371251

File Name: debian_DLA-4852.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 10/23/2026

Updated: 10/23/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.23

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-20031

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2026-20348

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:12.0, p-cpe:/a:debian:debian_linux:clamav-base, p-cpe:/a:debian:debian_linux:clamav-daemon, p-cpe:/a:debian:debian_linux:clamav-doc, p-cpe:/a:debian:debian_linux:clamav-docs, p-cpe:/a:debian:debian_linux:clamav-freshclam, p-cpe:/a:debian:debian_linux:clamav-milter, p-cpe:/a:debian:debian_linux:clamav-testfiles, p-cpe:/a:debian:debian_linux:clamav, p-cpe:/a:debian:debian_linux:clamdscan, p-cpe:/a:debian:debian_linux:libclamav-dev, p-cpe:/a:debian:debian_linux:libclamav12

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/23/2026

Vulnerability Publication Date: 3/4/2026

Reference Information

CVE: CVE-2026-20031, CVE-2026-20213, CVE-2026-20214, CVE-2026-20215, CVE-2026-20216, CVE-2026-20217, CVE-2026-20243, CVE-2026-20244, CVE-2026-20339, CVE-2026-20345, CVE-2026-20346, CVE-2026-20347, CVE-2026-20348

IAVB: 2026-B-0225

Detections

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