AUGUST 16, 2026
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Case File

CVE-2026-20338

HIGH · CVSS 7.5 EPSS 0.33% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-07 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

A vulnerability in the zip archive parser of ClamAV allows unauthenticated remote attackers to trigger a denial-of-service (DoS) condition by submitting a specially crafted zip file. This issue arises from improper memory handling during the scanning process, leading to a memory double-free that can terminate the ClamAV scanning service. Organizations using ClamAV for malware detection should prioritize patching this vulnerability to maintain service availability and security.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-20338
Severity
HIGH
CVSS
7.5
EPSS
0.33%

Original NVD Description

A vulnerability in the zip archive parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper memory handling when processing content in zip files during scanning. An attacker could exploit this vulnerability by submitting a crafted zip file for scanning. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate as a result of a memory double-free, resulting in a DoS condition on the affected software.