CVE-2009-2055

Published: Aug 19, 2009Updated: Apr 22, 2026 Sources: CVE List NVDCWE-20

5.9MEDIUM

NVD MITRE

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-20

Affected Products

cisco

commercial·USaka cisco systems, cisco systems inc.

ios xr

Networking Infrastructure

and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability

Added to KEV:Mar 25, 2022

Remediation due:Apr 15, 2022

Required action: Apply updates per vendor instructions.

Official Patch Available

Is your org exposed to CVE-2009-2055?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

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

mailman.nanog.org

http://securitytracker.com/id?1022739

securitytracker.com

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

cisco.com

and 1 more references View all →

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