CVE-2024-20313: Cisco IOS XE

High severity, CVSS 7.4. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability in the OSPF version 2 (OSPFv2) feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of OSPF updates that are processed by a device. An attacker could exploit this vulnerability by sending a malformed OSPF update to the device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Affected products

• Cisco IOS XE: version 17.5.1 only; version 17.5.1a only; version 17.6.1 only; version 17.6.1a only; version 17.6.1w only; version 17.6.1x only; …

Published 2024-04-24. Last modified 2026-06-17.