CVE-2009-2055

N/A Unknown CISA KEV - Actively Exploited

Published: August 19, 2009 Modified: October 22, 2025

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html

Source: psirt@cisco.com

Mailing List

http://securitytracker.com/id?1022739

Source: psirt@cisco.com

Broken Link

http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml

Source: psirt@cisco.com

Patch Vendor Advisory

http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing List

http://securitytracker.com/id?1022739

Source: af854a3a-2127-422b-91ae-364da2661108

Broken Link

http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml

Source: af854a3a-2127-422b-91ae-364da2661108

Patch Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-2055

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

7 reference(s) from NVD

Quick Stats

CVSS v3 Score

N/A / 10.0

EPSS (Exploit Probability)

1.7%

82th percentile

Exploitation Status

Actively Exploited

Remediation due: 2022-04-15

Weaknesses (CWE)

CWE-20

Affected Vendors

cisco

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