Check Point Log Servers Vulnerability CVE-2026-91843 Allows Root Code Execution

A vulnerability CVE-2026-91843 in Check Point Security Management and Log Servers allows an unauthenticated attacker to execute code as root via a pre-authentication stack overflow. CERT-In rated it critical (CIVN-2026-0465). Affected versions: R82.20, R82.10, R82, R81.20, R81.10, and R80–R81 lines.

• CVE-2026-91843: pre-auth stack overflow leads to root code execution
• CERT-In rated critical, ID CIVN-2026-0465
• Affects Security Management, Multi-Domain Management, Log Servers R82.20–R80
• Fixes in updates per advisory sk1000155