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Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability

CVE-2026-76460

What this means

This is rated critical severity (10 out of 10). It is on the known-exploited catalogue, which means attacks using it have already been seen. Ask IT whether Cisco Identity Services Engine is in your estate, and treat that as the priority.

Full vendor description

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.

Scoring and exploitation

10.0/ 10
CVSS 3.1 base scoreCritical

Exploitable over the network without any account, and no one has to click or open anything. High impact on confidentiality, integrity and availability, and it can reach beyond the vulnerable system.

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

Exploitability

Longer bar: easier to attack

Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionNoneUI:N
ScopeChangedS:C

Impact

Longer bar: more harm

ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
Elevated attack likelihood (~75.6% in 30 days)Model estimate (): a probability signal, not confirmed exploitation
Exploited in the wild
Yes — confirmed exploitation (US CISA )
Not reported
Listed product
Cisco Identity Services Engine

Weaknesses

CWE-648

Affected products ()

  • Cisco Identity Services Engine
Show the raw CPE strings (40)
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:-:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch1:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch10:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch11:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch2:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch3:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch4:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch5:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch6:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch7:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch8:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch9:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:-:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch1:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch10:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch2:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch3:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch4:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch5:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch6:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch7:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch8:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch9:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:*
  • cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:*

Showing 25 of 40 matches from .

References

2 links from the CVE record, grouped by site; the vendor's advisory comes first.

  • Type Vulnerability

    A vulnerability in Cisco Identity Services Engine involves incorrect use of privileged APIs, with a high probability of exploitation. Known-exploited catalogue reports exploitation in the wild.

    Next step: Confirm whether Cisco Identity Services Engine is in your estate.

    Who's reporting

    1 of 3 perspectives

    Official authority: Official 1Vendor statement missing. no VendorResearcher coverage missing. no Researcher1 signal

    Only official coverage so far. Treat as an early signal.

    CVE-2026-76460