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CVE-2026-6643

CRITICAL · CVSS 9.9 EPSS 0.13% Public Exploit

Source: NVD + CISA KEV + EPSS · Published: 2026-04-20 · Last synced: 2026-05-18

CyberRota Analysis

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Public Exploit Signal

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

Detected Signals
exploit

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CVE
CVE-2026-6643
Severity
CRITICAL
CVSS
9.9
EPSS
0.13%

Original NVD Description

A stack-based buffer overflow vulnerability was found in the VPN Clients on the ADM. The issue stems from the use of unbounded sscanf() and passing user-controlled data directly to printf(). Due to the lack of PIE and Stack Canary protections, an authenticated remote attacker can exploit these to execute arbitrary code as the web server user. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RR42 as well as from ADM 5.0.0 through ADM 5.1.2.REO1.