Medium WID-SEC-2026-4108 1 CVE

Cisco IOS XR: Schwachstelle ermöglicht Denial of Service

Published Oct 21, 2026 · Updated Oct 21, 2026 · de-DE

Vendor: Cisco Product: IOS XR

Summary

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco IOS XR ausnutzen, um einen Denial of Service Angriff durchzuführen.

Product

Cisco Internetwork Operating System (IOS) ist ein Betriebssystem, das für Cisco Geräte wie z. B. Router und Switches eingesetzt wird.

Vulnerabilities 1

High 7.5

CVE-2026-76505

Cisco IOS XR Software for ASR 9000 Series Routers IPv4 Unicast Packets Denial of Service Vulnerability

A vulnerability in the IPv4 packet processing functionality of Cisco IOS XR Software that affects Cisco ASR 9000 and 9900 Series Aggregation Services Routers as well as Cisco ASR 9902 and 9903 Compact High-Performance Routers could allow an unauthenticated, r…

Cisco Cisco IOS XR Software iOS Network devices

Oct 21, 2026

Revision history

2026-10-21 #1
Initiale Fassung

References

Cisco Security Advisory cisco-sa-asr9k-tUyxcyXN vom 2026-10-21
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr9k-tUyxcyXN