CVE-2026-20216
ClamAV InstallShield File Format Processing Resource Exhaustion Vulnerability
Severity
High 7.5
CVSS 3.1
Exploited
Not listed
EPSS
0.005
40.1th percentile
Discovered by
Third party
Published by the vendor
Published
Jul 1, 2026
Assigned by cisco
Description
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.
Weakness: CWE-770
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Secure Endpoint | Endpoint / EDR | cna-assigner |
Vendor-reported affected versions (1)
- Cisco · Cisco Secure Endpoint