Live › vulnerability › CVE-2009-2055
Go to dashboardCisco IOS XR routers running BGP can be crashed or disrupted by a remote attacker sending crafted traffic. The attacker gets denial of service, not code execution or data access.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Cisco IOS XR | vendor | – | – |
Unknown from the sources.
Apply the Cisco IOS XR update per the vendor advisory (CISA required action: apply updates per vendor instructions); the fixed version is unknown from the sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.
This page as .md · .json · in your agent: get_signal("CVE-2009-2055")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.