Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability
Description
A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device.
This vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.
Affected products
1- Cisco/Cisco Secure Firewall Management Center (FMC)v5Range: 7.0.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
2- CISA Orders US Government to Patch Maximum Severity Cisco FlawInfosecurity Magazine · Mar 23, 2026
- AWS Warns Hackers Have Abused Cisco Firewall Zero-Day Since JanuaryInfosecurity Magazine · Mar 19, 2026