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.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Cisco | Cisco Identity Services Engine Software | unknown |
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Tracking
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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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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2026-09-17T16:01:38.332Z
Reserved: 2025-10-08T11:59:15.414Z
Link: CVE-2026-20352
Vulnrichment
Updated: 2026-09-17T16:01:24.163Z
NVD
Status : Received
Published: 2026-09-16T21:17:12.517
Modified: 2026-09-17T17:16:39.830
Link: CVE-2026-20352
Redhat
No data.
OpenCVE Enrichment
No data.
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CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer