AUGUST 16, 2026
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Case File

CVE-2026-20348

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 XAR file format parser of ClamAV allows unauthenticated remote attackers to exploit improper boundary checks, potentially leading to a denial-of-service (DoS) condition or memory corruption on affected devices. By submitting a specially crafted XAR file for scanning, an attacker can terminate the ClamAV scanning process, disrupting its functionality. Organizations using ClamAV should prioritize addressing this vulnerability to maintain system integrity and availability.

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-2026-20348
Severity
HIGH
CVSS
7.5
EPSS
0.33%

Original NVD Description

A vulnerability in the XAR file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device. This vulnerability is due to improper boundary checks for content in XAR files during scanning. An attacker could exploit this vulnerability by submitting a crafted file that contains XAR content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.