CVE-2009-2056
Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service ...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-2056- CVSS 2.0
- 3.3 Low
AV:N/AC:L/Au:M/C:N/I:N/A:P - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-2056- Updated
- 2026-11-02
EUVDEUVD-2009-2052 No score
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.
- Record
EUVD-2009-2052- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mc68-3chj-wmp4 No score
Cisco IOS XR 3.8.1 and earlier allows remote authenticated users to cause a denial of service ...
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.
- Record
GHSA-mc68-3chj-wmp4- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-2056 is a low vulnerability (CVSS 3.3) in Cisco Ios Xr, published August 21, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.34%, the 71st percentile. No source names a fixed version.