---
title: "CVE-2026-76460: Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-76460/
description: "CVE-2026-76460 (Cisco Identity Services Engine): Exploited in the wild (CISA KEV). A vulnerability in an API of Cisco Identity Services Engine (ISE) could…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-09-16
date_modified: 2026-10-07
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-76460"
kev: true
cvss: 10
epss: 0.14026
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-76460: Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Cisco Identity Services Engine. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-09-16, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-09-19 ; treat that as the outer limit, not the target.
- EPSS 14.0% , percentile 97: FIRST’s model estimates a 14.0% chance of exploitation activity in the next 30 days, higher than 97% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Editorial verdict: Act now. Cisco ISE CVE-2026-76460: Exploited CVSS 10 Auth Bypass — If you run Cisco ISE or ISE-PIC on any release before the fixed patches, patch now and hunt every node; the bug needs no login, is exploited, and Cisco warns attackers may get root and erase their tracks.

## What it is

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 (CVE record)

- 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
- Cisco Cisco ISE Passive Identity Connector: 3.4.0, 3.5.0

## Severity

- cisco CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2026-09-16; federal due date 2026-09-19. Known ransomware use: Unknown.
- CISA 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.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 14.03% probability of exploitation activity in the next 30 days; percentile 97.

## Sources

- [Listed in CISA KEV notes (sec.cloudapps.cisco.com)](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ISE-ABP-VNSW7Tn5)
- [CVE.org record CVE-2026-76460](https://www.cve.org/CVERecord?id=CVE-2026-76460)
- [NVD entry CVE-2026-76460](https://nvd.nist.gov/vuln/detail/CVE-2026-76460)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76460)
- [Listed in CISA KEV notes (cisa.gov)](https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk)
- [Listed in CISA KEV notes (cisa.gov)](https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk)

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Source page: https://erroneo.us/security/cve/CVE-2026-76460/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt