Cisco Identity Services Engine CVE-2026-76460 exploited in the wild
Executive summary
CISA lists CVE-2026-76460, a vulnerability in Cisco Identity Services Engine, in the Known Exploited Vulnerabilities catalog (added 2026-09-16, due 2026-09-19), and NVD records a CVSS of 10.0. This report summarizes public CTI only.
Technical analysis
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. CPE: CWE-648. CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
IOCs
No public IOC is available.
CVEs and affected products
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.
ATT&CK mapping
Exploit Public-Facing Application
Tactic: Initial Access
Detection content
Sigma rules, YARA rules, Splunk SPL, and KQL detection logic.
Threat hunting
Hypothesis-driven hunt procedures and telemetry checklist.
Remediation
Containment actions, patching notes, and credential steps.
Historical relationships
No published historical relationship is available.
Timeline and change history
Confidence and caveats
0.9
⚠️ This report describes public CTI and does not assess any specific organization's exposure.
⚠️ Detection queries are templates and require local validation.
⚠️ Exploitation status reflects the public CISA KEV catalog record.
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Intelligence Sources & Advisory Feeds
DFIR investigations, vendor research, advisory feeds & verified claims
11 references
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Evidence consists of the NVD record, the CISA KEV catalog entry, the FIRST EPSS model output, and indexed source documents that reference this CVE.
NVD entry for CVE-2026-76460: 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. The record carries CVSS 10.0 (3.1) vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H, weaknesses CWE-648.
CISA added CVE-2026-76460 to the Known Exploited Vulnerabilities catalog on 2026-09-16 with a required due date of 2026-09-19, recording the vulnerability as exploited in the wild and affecting vendor Cisco, product Identity Services Engine. Required action: 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.
FIRST EPSS models an exploitation probability of 0.00784 (percentile 0.54592) for CVE-2026-76460.
Source check-point-research published 2026-09-21 at https://research.checkpoint.com/2026/21st-september-threat-intelligence-report/ references CVE-2026-76460 affecting Cisco Identity Services Engine.
Source soc-prime-detection-news published 2026-09-17 at https://socprime.com/blog/cve-2026-76460-cisco-ise-zero-day-exploited/ references CVE-2026-76460 affecting Cisco Identity Services Engine.
Source the-hacker-news published 2026-09-17 at https://thehackernews.com/2026/09/cisco-warns-of-new-zero-day-ise-auth.html references CVE-2026-76460 affecting Cisco Identity Services Engine.
Source nist-national-vulnerability-database-nvd published 2026-09-16 at https://nvd.nist.gov/vuln/detail/CVE-2026-76460 references CVE-2026-76460 affecting Cisco Identity Services Engine.
Source cisa-cybersecurity-advisories published 2026-09-16 at https://www.cisa.gov/news-events/alerts/2026/09/16/cisa-adds-two-known-exploited-vulnerabilities-catalog references CVE-2026-76460 affecting Cisco Identity Services Engine.
Source cisa-known-exploited-vulnerabilities published 2026-09-16 at https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json#CVE-2026-76460 references CVE-2026-76460 affecting Cisco Identity Services Engine.
Source canadian-centre-for-cyber-security-alerts published undated at https://cyber.gc.ca/en/alerts-advisories/cisco-security-advisory-av26-932 references CVE-2026-76460 affecting Cisco Identity Services Engine.
Source canadian-centre-for-cyber-security-alerts published undated at https://cyber.gc.ca/en/alerts-advisories/al26-021-vulnerabilities-impacting-cisco-identity-services-engine-ise-cisco-ise-passive-identity-connector-ise-pic-cve-2026-20192-cve-2026-76423-cve-2026-76460 references CVE-2026-76460 affecting Cisco Identity Services Engine.