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.
Metrics
Affected Vendors & Products
References
History
Sat, 19 Sep 2026 23:00:00 +0000
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Cisco
Cisco identity Services Engine Software |
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| Vendors & Products |
Cisco
Cisco identity Services Engine Software |
Thu, 17 Sep 2026 16:30:00 +0000
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| Metrics |
ssvc
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Wed, 16 Sep 2026 20:30:00 +0000
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| 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. | |
| Title | Cisco Identity Services Engine RADIUS Denial of Service Vulnerability | |
| Weaknesses | CWE-119 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: cisco
Published: 2026-09-16T20:11:53.701Z
Updated: 2026-09-17T16:01:38.332Z
Reserved: 2025-10-08T11:59:15.414Z
Link: CVE-2026-20352
Updated: 2026-09-17T16:01:24.163Z
Status : Awaiting Analysis
Published: 2026-09-16T21:17:12.517
Modified: 2026-09-18T13:28:28.567
Link: CVE-2026-20352
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