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VulnerabilityPublished

CVE-2026-20241: Cisco Identity Services Engine Software · Improper Authorization

Affects Cisco Identity Services Engine SoftwareSource CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium.

Data as of 4 Nov 2026, 18:43 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (cisco)CVSS 3.15.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
CiscoCisco Identity Services Engine SoftwareAffected
  • 3.1.0 – 3.5.0
5 affected builds
Fixed in–
CiscoCisco ISE Passive Identity ConnectorAffected
  • 3.1.0 – 3.5.0
5 affected builds
Fixed in–

AI-suggested

Until a fix is available, monitor Cisco advisories for updates and consider restricting network access to affected devices where feasible.

Description

A vulnerability in the authorization mechanism of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an unauthenticated, remote attacker to obtain an endpoint identity certificate. This vulnerability is due to improper authorization checks. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to bypass authorization to obtain an endpoint certificate.

References

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