What is CVE-2026-20216?

CVE-2026-20216 is a high-severity vulnerability in Cisco Secure Endpoint, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-07-01.

How severe is CVE-2026-20216?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Cisco Secure Endpoint

CVE-2026-20216

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.

EPSS: 0.005 (39.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cisco Secure Endpoint — versions 7.0.5, 6.2.19, 7.3.3
Cisco Secure_endpoint
Clamav

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

psirt@cisco.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20216?: CVE-2026-20216 is a high-severity vulnerability in Cisco Secure Endpoint, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-07-01.
How severe is CVE-2026-20216?: High severity. CVSS v3 base score is 7.5 out of 10.