CVE-2026-20345
Severity CVSS v4.0:
Pending analysis
Type:
CWE-121
Stack-based Buffer Overflow
Publication date:
07/08/2026
Last modified:
11/08/2026
Description
A vulnerability in the GPT file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of&nbsp;memory corruption on an affected device.<br />
<br />
This vulnerability is due to improper handling of an endian conversion operation, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted GPT file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH