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ExploitedIn CISA KEV

CVE-2026-76460

Exploitation confirmed. First attested on 2026-09-16 by CISA-ADP, CISA KEV, GCVE · previdian.

  • Published2026-09-16
  • WeaknessCWE-648

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-09-16Added to the CISA KEV catalogCISA KEV
  2. 2026-09-16Listed as exploited by GCVEGCVE
  3. 2026-09-16Exploitation first reportedCISA KEV
  4. 2026-09-1621:17CVE publishedNVD
  5. 2026-09-1703:57SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-01 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-76460?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-76460?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Cisco identity services engine
BranchAffectedFixed in
3.1= 3.1.0no fix published
3.2= 3.2.0no fix published
3.3= 3.3.0no fix published
3.4= 3.4.0no fix published
3.5= 3.5.0no fix published
Cisco identity services engine passive identity connector
BranchAffectedFixed in
3.1= 3.1.0no fix published
3.2= 3.2.0no fix published
3.3= 3.3.0no fix published
3.4= 3.4.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA2 products

As cisco, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Cisco Identity Services Engine Softwareother versions: unknown
    Affected
    • = 3.1.0 p8no fix stated
    • = 3.1.0 p9no fix stated
    • = 3.3 Patch 2no fix stated
    • = 3.3 Patch 1no fix stated
    • = 3.3 Patch 3no fix stated
    • = 3.4.0no fix stated
    • = 3.2.0 p7no fix stated
    • = 3.3 Patch 4no fix stated

    22 more version lines in the CVE record.

  • Cisco ISE Passive Identity Connectorother versions: unknown
    Affected
    • = 3.4.0no fix stated
    • = 3.5.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-09-16

Fix

  1. CISA’s 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.due 2026-09-19

Advisories and patches

Detection

read 2026-11-01 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedS3v3n-JG/CVE-2026-76460
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2026-09-16
Patch Due Date
2026-09-19
Ransomware Use
Unknown
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.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
2026-09-16
Last Modified
2026-10-07
NVD status
Analyzed
GitHub Advisory
GHSA-25wc-3w28-q6vw

Frequently asked questions

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.

Is CVE-2026-76460 actively exploited?

Yes. CVE-2026-76460 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-09-19.

What is the CVSS score for CVE-2026-76460?

CVE-2026-76460 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

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Sources for this record