Cisco Identity Services Engine Authentication Bypass Vulnerability
Affects Cisco Identity Services Engine and Cisco ISE Passive Identity Connector regardless of device configuration. Fixed in 3.1 Patch 12.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 3.1 Patch 12
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: active
- Automatable: yes
- Technical impact: total
Summary
Cisco Identity Services Engine (ISE) is affected by this vulnerability. A remote attacker without credentials could bypass authentication and gain unauthorized access to the device's web-based management interface.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Timeline
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CVE published
- CISA SSVC assessment
Exploitation: active · Automatable: yes · Technical impact: total
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Cisco Cisco Identity Services Engine Software
3.1.0 p8, 3.1.0 p9, 3.3 Patch 2, 3.3 Patch 1, 3.3 Patch 3, 3.4.0, 3.2.0 p7, 3.3 Patch 4, 3.4 Patch 1, 3.1.0 p10, 3.3 Patch 5, 3.3 Patch 6, 3.4 Patch 2, 3.3 Patch 7, 3.4 Patch 3, 3.5.0, 3.4 Patch 4, 3.3 Patch 8, 3.2 Patch 8, 3.5 Patch 1, 3.3 Patch 9, 3.2 Patch 9, 3.4 Patch 5, 3.5 Patch 3, 3.5 Patch 2, 3.3 Patch 10, 3.3 Patch 11, 3.4 Patch 6, 3.2 Patch 10, 3.1.0 p11
- Cisco Cisco ISE Passive Identity Connector
3.4.0, 3.5.0
References 1
sec.cloudapps.cisco.com
Questions about CVE-2026-76460
Am I affected, and how do I check?
Cisco Identity Services Engine Software and Cisco ISE Passive Identity Connector (ISE-PIC) are covered regardless of device configuration. The checked facts do not list affected version ranges, so compare the installed version reported by the product against the fixed release, 3.1 Patch 12.Source: sec.cloudapps.cisco.com
What should I do about it?
Upgrade to 3.1 Patch 12, which the advisory names as the fixed version. No workaround is listed in the checked facts.Source: sec.cloudapps.cisco.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-09-16, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data