CVE-2012-4099
The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote...
The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.
Exploit likelihood
What each source reports
NVD Score used
The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.
- Record
CVE-2012-4099- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.
- Record
CVE-2012-4099- Updated
- 2026-11-02
EUVDEUVD-2012-4043 No score
The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.
- Record
EUVD-2012-4043- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6jv7-88jc-m94f No score
The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote...
The BGP implementation in Cisco NX-OS does not properly filter AS paths, which allows remote attackers to cause a denial of service (BGP service reset and resync) via a malformed UPDATE message, aka Bug ID CSCtn13065.
- Record
GHSA-6jv7-88jc-m94f- Weakness
- CWE-20
- 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-2012-4099 is a medium vulnerability (CVSS 4.3) in Cisco Nx-os, published October 14, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.61%, the 76th percentile. No source names a fixed version.