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 when the affected API endpoint is called. An attacker could exploit this vulnerability by sending a series of crafted requests to the affected endpoint and analyzing the differentiated responses. A successful exploit could allow the attacker to compile a list of valid usernames on an affected system.
Metrics
Affected Vendors & Products
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History
Wed, 06 May 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Wed, 06 May 2026 16:45:00 +0000
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| Description | 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 when the affected API endpoint is called. An attacker could exploit this vulnerability by sending a series of crafted requests to the affected endpoint and analyzing the differentiated responses. A successful exploit could allow the attacker to compile a list of valid usernames on an affected system. | |
| Title | Cisco Identity Services Engine Observable Response Discrepancy Vulnerability | |
| Weaknesses | CWE-204 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: cisco
Published: 2026-05-06T16:14:54.611Z
Updated: 2026-05-06T17:48:38.355Z
Reserved: 2025-10-08T11:59:15.396Z
Link: CVE-2026-20195
Updated: 2026-05-06T17:35:02.527Z
Status : Awaiting Analysis
Published: 2026-05-06T17:16:21.630
Modified: 2026-05-06T18:59:53.230
Link: CVE-2026-20195
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