Cisco Identity Services Engine RADIUS Denial of Service Vulnerability
A vulnerability in the RADIUS message processing feature of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain RADIUS requests. An attacker could exploit this vulnerability by sending a specific authentication request to a network access device (NAD) that uses Cisco ISE for authentication, authorization, and accounting (AAA). A successful exploit could allow the attacker to cause Cisco ISE to reload. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-20152US | high8.6 | — | ||
A vulnerability in the RADIUS message processing feature of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause a denial of service (DoS)… | ||||
references
External citations — patches, advisories, analysis.
- Security Vulnerability Policyexternal
- Cisco Identity Services Engine RADIUS Denial of Service Vulnerabilityself
- Cisco Security Vulnerability Policyexternal
- considering software upgradesexternal
- free software updatesexternal
- https://www.cisco.com/c/en/us/products/end-user-license-agreement.htmlexternal
- Cisco Support and Downloads pageexternal
- Cisco Identity Service Engineexternal
remediations (1)
- FixedCisco Identity Services Engine Software
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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