CVE-2009-2055
- State
- Published
- Severity
- 5.9 Medium
- Published
- Aug 19, 2009
- Updated
- Jan 12, 2026
- Reserved
- Jun 12, 2009
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- [nanog] 20090817 RE: Anyone else seeing "(invalid or corrupt AS path) 3 bytes E01100" ?mailing-list
- 1022739vdb-entry
- 20090818 Cisco IOS XR Software Border Gateway Protocol Vulnerabilityvendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-2055government-resource
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