Cisco Secure FMC Remote Debugger Elevates Privileges
CVE-2026-76412 Published on September 16, 2026

Cisco Secure Firewall Management Center Software Authenticated Privilege Escalation to Root Vulnerability
A vulnerability in the remote diagnostics debugger of Cisco Secure FMC Software could allow an authenticated, remote attacker to enable the remote diagnostics debugger service. This vulnerability is due to an error when checking the privilege level of a user who is invoking remote diagnostics. An attacker could exploit this vulnerability by authenticating to the device, either through the web-based management interface or the REST API, and using the remote diagnostics debugger to grant a user elevated privileges. A successful exploit could allow the attacker to elevate privileges to root. Notes: To exploit this vulnerability, the attacker must have valid user credentials on the affected device. The CVSSv3.1 Attack Complexity is High due to the multistage process required to fully exploit this vulnerability.

NVD

Vulnerability Analysis

CVE-2026-76412 is exploitable with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
LOW
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

Permissions, Privileges, and Access Controls

Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.


Products Associated with CVE-2026-76412

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Cisco Secure Firewall Management Center
 

Affected Versions

Cisco Secure Firewall Management Center (FMC):