Threats Tagged 'cve-2026-20074'
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Threats Tagged 'cve-2026-20074'
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CVE-2026-20074: Improper Validation of Specified Type of Input in Cisco Cisco IOS XR SoftwareCVE-2026-20074 0 A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) multi-instance routing feature of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the IS-IS process to restart unexpectedly. This vulnerability is due to insufficient input validation of ingress IS-IS packets. An attacker could exploit this vulnerability by sending crafted IS-IS packets to an affected device after forming an adjacency. A successful exploit could allow the attacker to cause the IS-IS process to restart unexpectedly, resulting in a temporary loss of connectivity to advertised networks and a denial of service (DoS) condition. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device and must have formed an adjacency. Join the discussion | CVE Database V5 | 03/11/2026, 16:31:14 UTC Added: 03/11/2026, 16:59:52 UTC |
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