This vulnerability arises from improper boundary checks in the PESpin file format parser within ClamAV, which may result in an integer overflow. An attacker can exploit this by submitting a specially crafted PESpin file to be scanned, leading to memory corruption and causing the ClamAV scanning process to terminate, resulting in a denial-of-service condition. The vulnerability does not require authentication and can be triggered remotely. There is no information about other impacts beyond DoS. The CVSS 3.1 base score is 7.5, indicating high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability.

Successful exploitation causes the ClamAV scanning process to terminate, resulting in a denial-of-service condition. There is no confirmed impact on confidentiality or integrity. No known exploits are reported in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid scanning untrusted PESpin files or implement additional file validation controls if possible.