ZDI-26-709: Cisco Secure Firewall Management Center CommandSinkRmi Deserialization of Untrusted Data Remote Code Execution Vulnerability
Published Sep 16, 2026
·Updated
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco Secure Firewall Management Center. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.1. The following CVEs are assigned: CVE-2026-20242.
Affected Software
1 affected component
Cisco Cisco Secure Firewall Management Center
Event History
Sep 16, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
Does exploiting this issue require valid credentials?
No. Authentication is not required, so an unauthenticated remote attacker can exploit affected Cisco Secure Firewall Management Center installations.
2
What could an attacker achieve by exploiting the vulnerability?
An attacker could execute arbitrary code on the affected Cisco Secure Firewall Management Center installation.