CVE-2026-76460 — Cisco Identity Services Engine
CRITICALCVE-2026-76460 is a critical-severity (CVSS 10) CWE-648 vulnerability in cisco identity services engine. It is in CISA's Known Exploited Vulnerabilities catalog (added 2026-09-16) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.
A vulnerability in an API of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass authentication. This vulnerability is due to insufficient…
Exploitation Status
Actively exploited in the wild
- Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2026-09-16. Federal agencies were required to remediate by 2026-09-19.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2026-76460.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Description
A vulnerability in an API of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass authentication.
This vulnerability is due to insufficient authentication control on an API endpoint. An attacker could exploit this vulnerability by sending a crafted request to an affected API endpoint. A successful exploit could allow the attacker to gain unauthorized access to the affected device by bypassing the web-based management interface.
Affected Products
identity services engineciscoidentity services engine passive identity connectorciscoDetection & mitigation playbook
Vendor / applianceDetect
Inventory every cisco identity services engine deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2026-76460 yet — track the cisco identity services engine advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
How to detect CVE-2026-76460
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2026-76460 -u https://target- Template
- Cisco Identity Services Engine - ise-kong API Gateway Authentication Bypass
- Severity
- critical
- Impact
- Unauthenticated remote attackers can bypass authentication and gain unauthorized access to the device management interface.
- Remediation
- Update to the latest available version with the fix.
Template by ProjectDiscovery nuclei-templates (0x_Akoko), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2026-76460 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.