CVE-2009-4921
Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow...
Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.
Exploit likelihood
What each source reports
NVD Score used
Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.
- Record
CVE-2009-4921- CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.
- Record
CVE-2009-4921- Updated
- 2026-11-02
EUVDEUVD-2009-4884 No score
Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.
- Record
EUVD-2009-4884- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3qqh-3r54-2rh5 No score
Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow...
Cisco Adaptive Security Appliances (ASA) 5580 series devices with software before 8.1(2) allow remote attackers to cause a denial of service (traceback) via malformed TCP packets, aka Bug ID CSCsm84110.
- Record
GHSA-3qqh-3r54-2rh5- 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-2009-4921 is a high vulnerability (CVSS 7.8) in Cisco Asa 5580, published June 29, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.21%, the 68th percentile. No source names a fixed version.