CVE-2026-20176 Cisco ISE - Command Injection

Cisco ISE contains a command injection caused by insufficient validation of user-supplied input in HTTP requests, letting authenticated high-privileged administrators execute arbitrary OS commands and cause DoS, exploit requires high-privileged admin credentials.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.78% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution, Privilege Escalation, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-77

Vendor fix

Update to the latest available version with the fix.

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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