CVE-2025-20337

Cisco ISE API Unauthenticated Remote Code Execution Vulnerability

At a glance

Severity: CRITICAL 10.0
Exploitation: Known exploited (CISA KEV) · added 2025-07-28
Exploited per ENISA since 2025-07-28
EPSS: EPSS 74.50 % · percentile 99 (2026-10-27)
State: PUBLISHED
Published: 2025-07-16
Updated: 2026-02-26
Assigner: cisco
NVD status: Analyzed

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	CRITICAL 10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	cisco
CVSS 3.1	CRITICAL 10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H	NVD · psirt@cisco.com (Secondary)

Weaknesses (CWE)

CWE-74

European references

ENISA EUVD · EUVD-2025-21708
GCVE · GCVE-0-2025-20337

CERT-FR advisories

CERTFR-2025-AVI-0539 — Multiples vulnérabilités dans Cisco Identity Services Engine · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch2:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch3:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch4:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch5:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch6:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine:3.4.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch1:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch1:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch2:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch3:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch4:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch5:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch6:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:-:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch1:*:*:*:*:*:*

Affected products

Product	Versions
Cisco · Cisco Identity Services Engine Software	affected 3.3.0 ; affected 3.3 Patch 2 ; affected 3.3 Patch 1 ; affected 3.3 Patch 3 ; affected 3.4.0 ; affected 3.3 Patch 4
Cisco · Cisco ISE Passive Identity Connector	affected 3.2.0 ; affected 3.1.0 ; affected 3.3.0 ; affected 3.4.0

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD