CVE-2026-20216 — ClamAV InstallShield File Format Processing Resource Exhaustion Vulnerability
A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnera…
Published: 2026-07-01 · CVSS: 7.5 · CVSS 3.1
A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper handling of temporary resources during file scanning. An attacker could exploit this vulnerability by submitting a crafted InstallShield file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process and temporarily consume available system resources, resulting in a DoS condition on the affected software.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7