What is CVE-2026-20195?

CVE-2026-20195 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-05-06.

How severe is CVE-2026-20195?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Cisco Identity Services Engine Software

CVE-2026-20195

A vulnerability in an identity management API endpoint of Cisco ISE could allow an unauthenticated, remote attacker to enumerate valid user accounts on an affected device. This vulnerability exists because error messages are observed wh…

EPSS: 0.000 (11.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Cisco Identity Services Engine Software — versions 3.3.0, 3.3 Patch 2, 3.3 Patch 1

Weakness classification (CWE)

CWE-204 — Observable Response Discrepancy

References

cisco-sa-ise-unauth-bypass-uxjRXGpb

Frequently asked questions

What is CVE-2026-20195?: CVE-2026-20195 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-05-06.
How severe is CVE-2026-20195?: Medium severity. CVSS v3 base score is 5.3 out of 10.