# CVE-2025-20337: Cisco ISE API Unauthenticated Remote Code Execution Vulnerability

> CVE-2025-20337: Cisco ISE API Unauthenticated Remote Code Execution Vulnerability. CVSS 10.0 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2025-20337
Last updated: 2026-06-17T08:41:29Z

- Published: 2025-07-16 16:17 UTC · Updated: 2026-06-17 08:41 UTC · Assigner: cisco
- CVSS: 10.0 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS: 74.5%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-07-28, federal due date 2025-08-18, ransomware use: Unknown
- CWE: CWE-74

## Description

A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying operating system as root. The attacker does not require any valid credentials to exploit this vulnerability.  This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to obtain root privileges on an affected device.

## CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- Cisco: Cisco Identity Services Engine Software
- Cisco: Cisco ISE Passive Identity Connector

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-20337)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-20337)
- [https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-rce-ZAd2GnJ6](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-rce-ZAd2GnJ6)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-20337 · Markdown: https://rewindex.com/cve/CVE-2025-20337.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-20337 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:09:59.795Z