PatchTheCVECVE-2026-20186: A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execu
CVE-2026-20186 is a critical-severity flaw (CVSS 9.9) 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 Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least Read Only Admin credentials. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an aff
Why this priority
- Critical severity
- EPSS top 7%: very likely to be exploited
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.9 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 5.6% (top 7%) |
| CISA exploited list | No |
| Weakness | CWE-77 |
| Published | 2026-04-15 |
| 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-2026-20186?
identity services engine: upgrade to 3.2.0. Exact commands for each OS are on this page.
Is CVE-2026-20186 being exploited?
CVE-2026-20186 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-2026-20186 affect?
CVE-2026-20186 affects identity services engine. Severity is critical (CVSS 9.9). A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must h
How urgent is CVE-2026-20186?
Priority 58/100. Critical severity; EPSS top 7%: very likely to be exploited
Software pages
Cisco vulnerabilities · Cisco ISE vulnerabilities
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