ClamAV UDF File Parsing Out-of-Bounds Read Information Disclosure Vulnerability (CVE-2025-20234)
CVE number = CVE-2025-20234
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 more information see the ClamAV blog
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