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Status published
Unknown
CVE-2009-2055
Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
cisco
View all reports →Affected Software
ios xr
Vulnerable Versions:
3.4, 3.4.0, 3.4.1, 3.4.2, 3.4.3, 3.5, 3.5.2, 3.5.3, 3.5.4, 3.6.0, 3.6.1, 3.6.2, 3.6.3, 3.7.0, 3.7.1, 3.7.2, 3.7.3, 3.8.0, 3.8.1
Timeline
Official Publish:
August 19th, 2009
Last Modified:
January 12th, 2026
Added to House:
July 19th, 2026
CVSS Vectors
No vector data available
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.