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CVE-2026-76460

Cisco Identity Services Engine•CRITICAL · CVSS 10• In the wild In CISA KEV

What is 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.

CVSS10 NVD 3.1

SeverityCRITICAL

Exploitation In the wild In CISA KEV

EPSS76% · P100

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CWECWE-648

NVD published2026-09-16

NVD last modified2026-10-07

Timeline

2026-09-16Published to the U.S. National Vulnerability Database (NVD)
2026-09-16Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-09-19First covered in a defend.network daily briefing
2026-09-19CISA federal remediation deadline (BOD 22-01)
2026-10-07NVD record last updated

CISA Known Exploited Vulnerability

Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability

Added to KEV2026-09-16

Federal patch deadline2026-09-19

Known ransomware useUnknown

Affected product

Cisco Identity Services Engine

NVD also lists CPE entries for: Cisco Identity Services Engine, Cisco Identity Services Engine Passive Identity Connector

Remediation Steps

Apply the vendor security update for Cisco Identity Services Engine as a priority.
Restrict network exposure of the affected service to trusted sources until patched.
Review logs and detections for indicators of exploitation.
Confirm fixed versions against the official vendor advisory before deploying.

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 2 of October 2026 (October 12 – 18)
Vulnerability Priority Report – Week 1 of October 2026 (October 5 – 11)
Vulnerability Priority Report – Week 4 of September 2026 (September 28 – October 4)
Vulnerability Priority Report – Week 3 of September 2026 (September 21 – 27)
Vulnerability Priority Report – Week 2 of September 2026 (September 14 – 20)
OpenAI Codex sandbox escapes, North Korean WaterPlum targets 30K devices globally (2026-09-21)
Azure AI, Cisco ISE, WordPress flaws under active exploitation; 23M Gyazo breach (2026-09-19)

Related vulnerabilities

CVE-2026-76418 – Cisco Secure Firewall ASA Software And Cisco Secure FTD Software (same vendor)
CVE-2026-76519 – Cisco Secure Email Gateway (same vendor)
CVE-2026-76504 – Cisco Catalyst SD-WAN Manager (same vendor)
CVE-2026-76461 – Cisco Secure Email Gateway (same vendor)
CVE-2026-20349 – Cisco Secure Firewall Adaptive Security Appliance (ASA) And Secure Firewall Threat Defense (FTD) (same vendor)
CVE-2026-20316 – Cisco Secure Firewall Management Center (FMC) (same vendor)

Cisco: 102 known exploited vulnerabilities (CISA KEV) →

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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.