Vulnerability Monitor

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CVE-2012-1821

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.

Security Impact Summary

CVE-2012-1821 is a security vulnerability that . Impacting 2 products from symantec, from microsoft organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2012, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2012-05-24T00:55:02.727

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	symantec	endpoint_protection	11.0.6000	Yes
Application	symantec	endpoint_protection	11.0.6100	Yes
Application	symantec	endpoint_protection	11.0.6200	Yes
Application	symantec	endpoint_protection	11.0.6200.754	Yes
Application	symantec	endpoint_protection	11.0.6300	Yes
Application	symantec	endpoint_protection	11.0.7000	Yes
Application	symantec	endpoint_protection	11.0.7100	Yes
Operating System	microsoft	windows_2003_server	*	No
Operating System	microsoft	windows_2003_server	*	No
Operating System	microsoft	windows_2003_server	*	No

References

http://osvdb.org/82147 ([email protected])
http://secunia.com/advisories/49221 ([email protected])
http://www.kb.cert.org/vuls/id/149070 ([email protected])
http://www.securityfocus.com/bid/50358 ([email protected])
http://www.securitytracker.com/id?1027092 ([email protected])
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120522_00 Vendor Advisory ([email protected])
http://osvdb.org/82147 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/49221 (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/149070 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/50358 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1027092 (af854a3a-2127-422b-91ae-364da2661108)
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120522_00 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For symantec's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.