CVE-2026-76423 Cisco ISE - Broken Access Control

Cisco ISE and Cisco ISE-PIC contain a broken access control vulnerability caused by insufficient authorization checks in the REST API web service, letting unauthenticated remote attackers gain administrative access, exploit requires access to the REST API port.

CVSS base score 10.0 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.58% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Privilege Escalation, Data Tampering, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-290

Vendor fix

Update to the latest version with fixed authorization checks.

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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