CVE-2026-76412 Cisco Secure FMC Software - Privilege Escalation

Cisco Secure FMC Software contains a privilege escalation vulnerability caused by improper privilege level checks in the remote diagnostics debugger, letting authenticated remote attackers elevate privileges to root, exploit requires valid user credentials.

CVSS base score 8.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.44% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-264

Vendor fix

Update to the latest available version of Cisco Secure FMC Software.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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