PatchTheCVECVE-2026-20195: A vulnerability in an identity management API endpoint of Cisco ISE could allow an unauthenticated, remote att
CVE-2026-20195 is a medium-severity flaw (CVSS 5.3) affecting identity services engine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 expl
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 80%) |
| CISA exploited list | No |
| Weakness | CWE-204 |
| Published | 2026-05-06 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-20195?
identity services engine: upgrade to newer than 3.2.0. Exact commands for each OS are on this page.
Is CVE-2026-20195 being exploited?
CVE-2026-20195 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-20195 affect?
CVE-2026-20195 affects identity services engine. Severity is medium (CVSS 5.3). 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 whe
How urgent is CVE-2026-20195?
Priority 28/100. Remotely exploitable, no login, no user action
Software pages
Cisco vulnerabilities · Cisco ISE vulnerabilities
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