8.6
High
CVE-2026-20352 A vulnerability in the RADIUS feature of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote…
Description
A vulnerability in the RADIUS 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 crafted RADIUS request directly to an affected device. A successful exploit could allow the attacker to cause the ISE node to become unavailable. For single node deployments in that condition, endpoints that have not already authenticated would be unable to access the network until the node comes back up on its own.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Identity Services Engine Software | 3.5.0 | No fix stated |
| Cisco Identity Services Engine Software | 3.4.0 | No fix stated |
| Cisco Identity Services Engine Software | 3.3.0 | No fix stated |
| Cisco Identity Services Engine Software | 3.2.0 | No fix stated |
References
- cisco-sa-ise-RADIUS-dos-wR3hYPMw sec.cloudapps.cisco.com
Timeline
- Published
- Last modified
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