Cyber Resilience

CVE-2026-76460

Cisco Identity Services Engine 3.1.0 … 3.5.0

CISA KEVActive ExploitationEUVD Exploited
Published
16 September 2026
Modified
17 September 2026
KEV Added
16 September 2026
Patch / advisory
View advisory
CVSS Score v3.1 10.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0092 58th percentile
Risk Priority 100 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2026-76460 is a critical-severity Incorrect Use of Privileged APIs (CWE-648) vulnerability in Cisco Identity Services Engine. Its CVSS base score is 10.0 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Abuse Elevation Control Mechanism (T1548); ranked in the top 42% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

EU & UK References

Vulnerability Data

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…

more

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.

CWE(s)
CWE-648
KEV Date Added
16 September 2026

Related Threats

MITRE ATT&CK Enterprise Techniques

T1548 Abuse Elevation Control Mechanism Privilege Escalation
Adversaries may circumvent mechanisms designed to control privilege elevation to gain higher-level permissions.
attack.mitre.org →
T1548.001 Setuid and Setgid Privilege Escalation
An adversary may abuse configurations where an application has the setuid or setgid bits set in order to get code running in a different (and possibly more privileged) user’s context.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

Affected Assets

cisco
identity services engine
3.1.0, 3.2.0, 3.3.0, 3.4.0, 3.5.0
cisco
identity services engine passive identity connector
3.1.0, 3.2.0, 3.3.0, 3.4.0, 3.5.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.5.2
  • V6.4.6

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
prevents

Secure SDLC practices directly enforce correct usage of privileged APIs during development.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.18 Use of privileged utility programs partial match
degrades

Restricting privileged utility programs limits the exposure of privileged APIs to misuse.

A.8.2 Privileged access rights partial match
degrades

Privileged access rights directly govern the correct use of privileged APIs and reduce misuse.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle includes API usage standards that can prevent incorrect privileged calls.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify correct invocation of privileged APIs.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles guide proper privilege separation and API usage.

A.8.28 Secure coding partial match
prevents

Secure coding standards can enforce correct usage of privileged APIs.

References