CVE-2026-76299 Cisco - Broken Access Control

Cisco products contain an improper access control vulnerability caused by insufficient authorization checks, letting attackers gain unauthorized access, exploit requires specific conditions not detailed.

CVSS base score 9.9 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.14% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
21 October 2026
Updated
23 October 2026
Weakness
CWE-284

Vendor fix

Update to the latest Cisco software hardening release addressing CVE-2026-76299.

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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