CVE-2026-76412
published 2026-09-16CVE-2026-76412: A vulnerability in the remote diagnostics debugger of Cisco Secure FMC Software could allow an authenticated, remote attacker to enable the remote diagnostics…
PriorityP359high8.5CVSS 3.1
AVNACHPRLUINSCCHIHAH
EPSS
0.44%
36.9th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_secure_firewall_management_center | — | — |
| cisco | cisco_secure_firewall_management_center | — | — |
| cisco | cisco_secure_firewall_management_center | — | — |
| cisco | cisco_secure_firewall_management_center | — | — |
| cisco | cisco_secure_firewall_management_center | — | — |
| cisco | cisco_secure_firewall_management_center | — | — |
| cisco | cisco_secure_firewall_management_center | — | — |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Cisco Secure Firewall Management Center up to 10.0.1 Remote Diagnostics Debugger privileges management
vuldb·2026-09-16·CVSS 8.5
CVE-2026-76412 [HIGH] Cisco Secure Firewall Management Center up to 10.0.1 Remote Diagnostics Debugger privileges management
A vulnerability, which was classified as very critical, has been found in Cisco Secure Firewall Management Center up to 10.0.1. This vulnerability affects unknown code of the component Remote Diagnostics Debugger. The manipulation leads to improper privilege management.
This vulnerability is documented as CVE-2026-76412. The attack can be initiated remotely. There is not any exploit available.
It is advisable to upgrade the affected component.
GHSA
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.
ghsa_unreviewed·2026-09-16
CVE-2026-76412 [HIGH] 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.
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
No detection rules found.
No public exploits indexed.
2026-09-16
Published