Is CVE-2026-20193 being actively exploited?

CVE-2026-20193 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2026-20193?

CVE-2026-20193 has a CVSS 3.1 base score of 4.3 (MEDIUM).

CVE-2026-20193

MEDIUM · CVSS 4.3EPSS 0.2%EU EUVD

A vulnerability in the RADIUS Policy API endpoints of Cisco ISE could allow an authenticated, remote attacker with read-only Administrator privileges to gain unauthorized access to sensitive information on an affected device. This vulnerability is due to improper role-based access control (RBAC) permissions on the RADIUS Policy API endpoints. An attacker could exploit this vulnerability by bypassing the web-based management interface and directly calling an affected endpoint. A successful exploit could allow the attacker to gain unauthorized read access to sensitive RADIUS Policy details that are restricted for their role.

Key facts

CVSS score: 4.3 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-862
EPSS score: 0.2% (12th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2026-27862)
Published: May 6, 2026
NVD last modified: July 1, 2026
Status: Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2026-27862 in the EU Vulnerability Database. Last updated in EUVD on May 6, 2026.

View on the EU Vulnerability Database

Affected products

cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine
cisco / identity services engine

Certified products that may be affected

3 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Cisco Identity Services Engine (ISE) V3.3 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-11517-2025 - active
Cisco ISE v2.0 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-10795-2017 - archived
Cisco Identity Services Engine (ISE) v1.2 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10521-2014 - archived

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-bypass-uxjRXGpb(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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