CVE-2012-1821
The Network Threat Protection module in the Manager component in Symantec Endpoint Protection ...
The Network Threat Protection module in the Manager component in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.700x on Windows Server 2003 allows remote attackers to cause a denial of service (web-server outage, or daemon crash or hang) via a flood of packets that triggers automated blocking of network traffic.
Exploit likelihood
What each source reports
NVD Score used
The Network Threat Protection module in the Manager component in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.700x on Windows Server 2003 allows remote attackers to cause a denial of service (web-server outage, or daemon crash or hang) via a flood of packets that triggers automated blocking of network traffic.
- Record
CVE-2012-1821- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
The Network Threat Protection module in the Manager component in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.700x on Windows Server 2003 allows remote attackers to cause a denial of service (web-server outage, or daemon crash or hang) via a flood of packets that triggers automated blocking of network traffic.
- Record
CVE-2012-1821- Updated
- 2026-11-02
EUVDEUVD-2012-1831 No score
The Network Threat Protection module in the Manager component in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.700x on Windows Server 2003 allows remote attackers to cause a denial of service (web-server outage, or daemon crash or hang) via a flood of packets that triggers automated blocking of network traffic.
- Record
EUVD-2012-1831- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3wf6-phm6-xcr4 No score
The Network Threat Protection module in the Manager component in Symantec Endpoint Protection ...
The Network Threat Protection module in the Manager component in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.700x on Windows Server 2003 allows remote attackers to cause a denial of service (web-server outage, or daemon crash or hang) via a flood of packets that triggers automated blocking of network traffic.
- Record
GHSA-3wf6-phm6-xcr4- 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-2012-1821 is a medium vulnerability (CVSS 5.0) in Symantec Endpoint Protection, published May 24, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.84%, the 86th percentile. No source names a fixed version.
References
osvdb.org/82147
kb.cert.org/vuls/id/149070
symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120522_00
securitytracker.com/id?1027092
secunia.com/advisories/49221
securityfocus.com/bid/50358
nvd.nist.gov/vuln/detail/CVE-2012-1821
github.com/advisories/GHSA-3wf6-phm6-xcr4