CVE-2014-3434: Symantec Endpoint Protection

Medium severity, CVSS 6.9. EPSS: 1.6% chance of exploitation in the next 30 days.

Buffer overflow in the sysplant driver in Symantec Endpoint Protection (SEP) Client 11.x and 12.x before 12.1 RU4 MP1b, and Small Business Edition before SEP 12.1, allows local users to execute arbitrary code via a long argument to a 0x00222084 IOCTL call.

Affected products

• Symantec Endpoint Protection: version 11.0 only; version 12.0 only; version 12.1 only

Published 2014-08-06. Last modified 2026-06-17.