CVE-2026-20216

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-07-01 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

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 Classification (1)

Affected Software (4)

VendorProductVersion
cisco secure_endpoint < 1.27.2
cisco secure_endpoint < 1.29.0
cisco secure_endpoint < 8.6.2
clamav clamav < 1.4.5

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.57%
Raw Score 0.005730
Percentile 47.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00573
2026-10-28
0.00573

Intelligence Sources

nvd ref →