SARA / Free Tools / CVE / CVE-2025-20337

CVE-2025-20337 — Cisco Identity Services Engine Injection Vulnerability

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.

CVSS
10.0 CRITICAL
EPSS
69.00% (top 28.30%)
CWE
CWE-74
Published
2025-07-16T16:17:04.664Z
Last modified
2026-02-26T17:50:30.400Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA KEV — Actively Exploited
Added to KEV
2025-07-28
BOD 22-01 due
2025-08-18
Ransomware use
Unknown

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
CiscoCisco Identity Services Engine Software3.3.0, 3.3 Patch 2, 3.3 Patch 1, 3.3 Patch 3, 3.4.0, 3.3 Patch 4, 3.4 Patch 1, 3.3 Patch 5, 3.3 Patch 6
CiscoCisco ISE Passive Identity Connector3.2.0, 3.1.0, 3.3.0, 3.4.0

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2025-07-28. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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