CVE-2025-20234

Publication date 18 June 2025

Last updated 7 July 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

A vulnerability in Universal Disk Format (UDF) processing of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a memory overread during UDF file scanning. An attacker could exploit this vulnerability by submitting a crafted file containing UDF content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the .

Status

Package Ubuntu Release Status
clamav 25.04 plucky
Fixed 1.4.3+dfsg-0ubuntu0.25.04.1
24.10 oracular
Fixed 1.4.3+dfsg-0ubuntu0.24.10.1
24.04 LTS noble
Fixed 1.4.3+dfsg-0ubuntu0.24.04.1
22.04 LTS jammy
Fixed 1.4.3+dfsg-0ubuntu0.22.04.1
20.04 LTS focal
Fixed 1.4.3+dfsg-0ubuntu0.20.04.1+esm1
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty
Needs evaluation

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Severity score breakdown

Parameter Value
Base score 5.3 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L