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CVE-2026-20352

Cisco Identity Services Engine RADIUS Denial of Service Vulnerability PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Cisco / Cisco Identity Services Engine Softwareaffected 3.2.0; affected 3.2.0 p1; affected 3.2.0 p2; affected 3.3.0; affected 3.2.0 p3; affected 3.2.0 p4; affected 3.2.0 p5; affected 3.2.0 p6; affected 3.3 Patch 2; affected 3.3 Patch 1; affected 3.3 Patch 3; affected 3.4.0; affected 3.2.0 p7; affected 3.3 Patch 4; affected 3.4 Patch 1; affected 3.3 Patch 5; affected 3.3 Patch 6; affected 3.4 Patch 2; affected 3.3 Patch 7; affected 3.4 Patch 3; affected 3.5.0; affected 3.4 Patch 4; affected 3.3 Patch 8; affected 3.2 Patch 8; affected 3.5 Patch 1; affected 3.3 Patch 9; affected 3.2 Patch 9; affected 3.4 Patch 5; affected 3.5 Patch 3; affected 3.5 Patch 2; affected 3.3 Patch 10; affected 3.3 Patch 11; affected 3.4 Patch 6; affected 3.2 Patch 10

CWE

CWE-119

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.