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CRITICAL Actively exploited CWE-74

CVE-2025-20337

Cisco ISE API Unauthenticated Remote Code Execution Vulnerability

Cisco·Identity Services Engine

10.0/ 10
CVSS 3.1
Critical severity
74%
EPSS exploit odds
Chance of exploitation in the next 30 days
Higher than 99.5% of all CVEs
Listed
CISA KEV catalog
Added
Jul 28, 2025
Fix due
Aug 18, 2025
Ransomware
Not known
Timeline
Published
Jul 16, 2025
Updated
Feb 26, 2026
First covered
Sep 18, 2026
Latest story
2 months ago

Summary

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.

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Attack profile

Attack vectorNetwork
ComplexityLow
PrivilegesNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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 products

  • Cisco Identity Services Engine Software3.3.03.3 Patch 23.3 Patch 13.3 Patch 3
  • Cisco ISE Passive Identity Connector3.2.03.1.03.3.03.4.0

References

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