AUGUST 16, 2026
Live Feed
Back to database
Case File

CVE-2026-20347

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 Mach-O file format parser of ClamAV allows unauthenticated remote attackers to exploit improper boundary checks, potentially leading to memory corruption and a denial-of-service (DoS) condition. By submitting a specially crafted Mach-O file for scanning, attackers can cause the ClamAV process to terminate unexpectedly. Organizations using ClamAV should prioritize addressing this vulnerability to mitigate risks of service disruption.

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-2026-20347
Severity
HIGH
CVSS
7.5
EPSS
0.33%

Original NVD Description

A vulnerability in the Mach-O 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 Mach-O files during scanning, which may result in an out-of-bounds buffer read. An attacker could exploit this vulnerability by submitting a crafted Mach-O file 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.