It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1081 advisory.

    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 . (CVE-2025-20234)

    A vulnerability in the PDF scanning processes of ClamAV could allow an unauthenticated, remote attacker to     cause a buffer overflow condition, cause a denial of service (DoS) condition, or execute arbitrary code on     an affected device.This vulnerability exists because memory buffers are allocated incorrectly when PDF     files are processed. An attacker could exploit this vulnerability by submitting a crafted PDF file to be     scanned by ClamAV on an affected device. A successful exploit could allow the attacker to trigger a buffer     overflow, likely resulting in the termination of the ClamAV scanning process and a DoS condition on the     affected software. Although unproven, there is also a possibility that an attacker could leverage the     buffer overflow to execute arbitrary code with the privileges of the ClamAV process. (CVE-2025-20260)

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

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

Detections

Analytics

Amazon Linux 2023 : clamav1.4, clamav1.4-data, clamav1.4-devel (ALAS2023-2025-1081)

critical Nessus Plugin ID 241789

Version 1.2

Version 1.1

Version 1.2 Jul 15, 2025, 2:39 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Plugin metadata Plugin Feed: 202507150239
Version 1.1 Jul 11, 2025, 4:37 AM New Plugin Feed: 202507110437