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ZDI-26-533: Cisco Secure Firewall Management Center login.cgi Authentication Bypass Vulnerability

ZDI discloses CVE-2026-20316, a 9.8-rated unauthenticated authentication bypass in Cisco Secure Firewall Management Center login.cgi.

ZDI-26-533 describes an authentication bypass vulnerability in Cisco Secure Firewall Management Center's login.cgi that allows remote attackers to bypass authentication without any credentials. ZDI assigned a CVSS score of 9.8, and the flaw is tracked as CVE-2026-20316. As a central management plane for firewall infrastructure, compromise could enable broad policy changes.

ZDI Published Advisories · Aug 11, 2026VulnerabilityCVE-2026-20316

ZDI-26-709: Cisco Secure Firewall Management Center CommandSinkRmi Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI disclosed CVE-2026-20242, an unauthenticated deserialization flaw in Cisco Secure Firewall Management Center enabling remote code execution (CVSS 8.1).

ZDI published advisory ZDI-26-709 describing deserialization of untrusted data in Cisco Secure Firewall Management Center's CommandSinkRmi component, tracked as CVE-2026-20242 with CVSS 8.1. Remote attackers can execute arbitrary code on affected installations without authentication. The advisory does not indicate whether exploitation has been observed in the wild.

ZDI Published Advisoriesupdated · 11h agofirst · 22h agoVulnerability 7 sourcesCVE-2026-20242