CVE-2009-2055 KEV
5.9
MEDIUM · CVSS 3.1 · EPSS 3.3% (pctl 88)
Patch first
On CISA KEV — known exploited in the wild, due 2022-04-15.
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.
Scoring
| CVSS | 5.9 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| EPSS | 3.31% — more likely to be exploited than 88% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | yes — remediate by 2022-04-15 |
| Public exploit | none known |
| Published | 2009-08-19 |
| Last modified | 2026-06-16 |
CISA KEV
| Name | Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability |
|---|---|
| Added | 2022-03-25 |
| Due | 2022-04-15 |
| Vendor / product | Cisco / IOS XR |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| cisco | ios xr |
References
- http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html
- http://securitytracker.com/id?1022739
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml
- http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html
- http://securitytracker.com/id?1022739
- http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-2055
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