CVE-2009-2055 kev in the critical feed json
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 inva…
published 2009-08-19 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-2051
- cvss
- 5.9
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-03-25
- epss
- 3.3%
- EPSS 3.3% chance of exploitation in 30 days, percentile 88%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-04-15 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Cisco, IOS XR
- CISA name
- Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
3.31% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
-
cisco.com
/en/US/products/products_security_advisory09186a0080af150f.shtml
vendor-advisory, patch
-
mailman.nanog.org
/pipermail/nanog/2009-August/012719.html
mailing-list
-
securitytracker.com
/id?1022739
vdb-entry, broken-link
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-2055
government-resource, us-government-resource
Sources
- CVE List CVE-2009-2055
- NVD CVE-2009-2055
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