Description
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.
Published: 2026-09-16
Score: 8.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Fri, 18 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco secure Firewall Management Center
Vendors & Products Cisco
Cisco secure Firewall Management Center

Fri, 18 Sep 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 16 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Cisco Secure Firewall Management Center Software Authenticated Privilege Escalation to Root Vulnerability
Weaknesses CWE-264
References
Metrics cvssV3_1

{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'}


Subscriptions

Cisco Secure Firewall Management Center
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-09-17T11:39:22.138Z

Reserved: 2026-08-19T12:02:03.632Z

Link: CVE-2026-76412

cve-icon Vulnrichment

Updated: 2026-09-17T11:31:37.163Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-16T21:17:13.717

Modified: 2026-09-18T13:28:28.567

Link: CVE-2026-76412

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-18T21:45:14Z

Weaknesses