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CVE-2022-20823

HIGH CVSS: 8.6 Published: 2022-08-25 Modified: 2026-06-17

Description

A vulnerability in the OSPF version 3 (OSPFv3) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incomplete input validation of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending a malicious OSPFv3 link-state advertisement (LSA) to an affected device. A successful exploit could allow the attacker to cause the OSPFv3 process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The OSPFv3 feature is disabled by default. To exploit this vulnerability, an attacker must be able to establish a full OSPFv3 neighbor state with an affected device. For more information about exploitation conditions, see the Details section of this advisory.

Affected Platforms

Cisco Nexus 9348Gc-FxpCisco Nexus 3064X FirmwareCisco Nexus 3064XCisco Nexus 3400 FirmwareCisco Nexus 3132QCisco Nexus 3524-X FirmwareCisco Nexus 9200 FirmwareCisco Nexus 3172PqCisco Nexus 93180Yc-Fx3SCisco Nexus 6001P Firmware

Weakness Type

CWE-126, CWE-125

References