CVE-2009-2056 json
Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service (process crash) via vectors involving a BGP U…
published 17y ago modified 4mo ago also EUVD-2009-2052
- cvss
- 3.3
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service (process crash) via vectors involving a BGP UPDATE message with many AS numbers prepended to the AS path.
Patch / fix
Is CVE-2009-2056 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
1.34% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-14).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 3.3 | AV:N/AC:L/Au:M/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-264 Permissions, Privileges, and Access Controls
- Technology feeds
References
-
cisco.com
/en/US/products/products_security_advisory09186a0080af150f.shtml
vendor-advisory, patch
-
securitytracker.com
/id?1022756
vdb-entry
Sources
- CVE List CVE-2009-2056
- NVD CVE-2009-2056
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