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CVE-2026-20241

Cisco Identity Services Engine Authorization Bypass Vulnerability

Medium5.3EPSS 0.25%
Published
Updated
Reserved
Assigned by
cisco

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.

Scores

CVSS scores of CVE-2026-20241, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.1Medium5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVDNVD · Awaiting Analysis3.1Medium5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS (exploitation in 30 days)
0.25% · top 84% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

Affected products

  • Cisco · Cisco Identity Services Engine Software

    • affected 3.1.0
    • affected 3.1.0 p1
    • affected 3.1.0 p3
    • affected 3.1.0 p2
    • affected 3.2.0
    • affected 3.1.0 p4
    • affected 3.1.0 p5
    • affected 3.2.0 p1
    • affected 3.1.0 p6
    • affected 3.2.0 p2
    • affected 3.1.0 p7
    • affected 3.3.0
    • affected 3.2.0 p3
    • affected 3.2.0 p4
    • affected 3.1.0 p8
    • affected 3.2.0 p5
    • affected 3.2.0 p6
    • affected 3.1.0 p9
    • affected 3.3 Patch 2
    • affected 3.3 Patch 1
    • affected 3.3 Patch 3
    • affected 3.4.0
    • affected 3.2.0 p7
    • affected 3.3 Patch 4
    • affected 3.4 Patch 1
    • affected 3.1.0 p10
    • affected 3.3 Patch 5
    • affected 3.3 Patch 6
    • affected 3.4 Patch 2
    • affected 3.3 Patch 7
    • affected 3.4 Patch 3
    • affected 3.5.0
    • affected 3.4 Patch 4
    • affected 3.3 Patch 8
    • affected 3.2 Patch 8
    • affected 3.5 Patch 1
    • affected 3.3 Patch 9
    • affected 3.2 Patch 9
    • affected 3.4 Patch 5
    • affected 3.5 Patch 3
    • and 6 more

  • Cisco · Cisco ISE Passive Identity Connector

    • affected 3.2.0
    • affected 3.1.0
    • affected 3.3.0
    • affected 3.4.0
    • affected 3.5.0

What to do

Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2026-20241 badge
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Record last updated .