The Network Threat Protection module in the Manager component in Symantec Endpoint…
Priority LOW 28Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.02838 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:symantec:endpoint_protection:11.0.6000:*:*:*:*:*:*:* | 11.0.6000 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:11.0.6100:*:*:*:*:*:*:* | 11.0.6100 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:11.0.6200:*:*:*:*:*:*:* | 11.0.6200 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:11.0.6200.754:*:*:*:*:*:*:* | 11.0.6200.754 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:11.0.6300:*:*:*:*:*:*:* | 11.0.6300 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:11.0.7000:*:*:*:*:*:*:* | 11.0.7000 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:11.0.7100:*:*:*:*:*:*:* | 11.0.7100 | Vulnerable | Symantec |
| cpe:2.3:o:microsoft:windows_2003_server:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_2003_server:*:sp1:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:* | all versions | Running on | Microsoft |
- cpe:2.3:a:symantec:endpoint_protection:11.0.6000:*:*:*:*:*:*:* Versions 11.0.6000 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:11.0.6100:*:*:*:*:*:*:* Versions 11.0.6100 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:11.0.6200:*:*:*:*:*:*:* Versions 11.0.6200 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:11.0.6200.754:*:*:*:*:*:*:* Versions 11.0.6200.754 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:11.0.6300:*:*:*:*:*:*:* Versions 11.0.6300 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:11.0.7000:*:*:*:*:*:*:* Versions 11.0.7000 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:11.0.7100:*:*:*:*:*:*:* Versions 11.0.7100 Vulnerable ·Symantec
- cpe:2.3:o:microsoft:windows_2003_server:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_2003_server:*:sp1:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:* Versions all versions Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2012-1821
- 2026-10-03 Alias added: GHSA-3wf6-phm6-xcr4
References
More Symantec Endpoint Protection vulnerabilities
- TI-2009-01353 The Intel LANDesk Common Base Agent (CBA) in Symantec Alert Management System 2 (AMS2)… CVSS 2.0HIGH 10.0
- TI-2009-01354 Multiple stack-based buffer overflows in IAO.EXE in the Intel Alert Originator Service in… CVSS 2.0HIGH 9.3
- TI-2016-02020 The AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP); Symantec… CVSS 3.0HIGH 7.8
- TI-2012-01284 The ZIP file parser in AhnLab V3 Internet Security 2011.01.18.00, AVG Anti-Virus… CVSS 2.0MEDIUM 4.3
- TI-2012-01283 The Gzip file parser in AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Command Antivirus… CVSS 2.0MEDIUM 4.3
- TI-2012-01281 The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2012-1821 · CVE Program
- CVE-2012-1821 · NVD
- FIRST EPSS
- GHSA-3wf6-phm6-xcr4 · GitHub Advisory Database · CC BY 4.0
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