Cisco Identity Services Engine Authentication Bypass Vulnerability
70Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.
ssvc Actcvss 10epss 0.8%
from disclosure to weapon1 days
Published on NVDSep 16
1st PoC+1d
VulnCheckSep 16
exploitation probability
0.8%top 46% of all CVEs
observed exploitation
yesVulnCheck
1 public exploit(s)
Action required by CISAfederal deadline: 2026-09-19
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
Cisco · Cisco Identity Services Engine SoftwareCisco · Cisco ISE Passive Identity Connectorpublic PoCs found — 1
githubgithub.com/S3v3n-JG/CVE-2026-76460★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.