CVE-2018-12238: Symantec Endpoint Protection

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Norton prior to 22.15; Symantec Endpoint Protection (SEP) prior to 12.1.7454.7000 & 14.2; Symantec Endpoint Protection Small Business Edition (SEP SBE) prior to NIS-22.15.1.8 & SEP-12.1.7454.7000; and Symantec Endpoint Protection Cloud (SEP Cloud) prior to 22.15.1 may be susceptible to an AV bypass issue, which is a type of exploit that works to circumvent one of the virus detection engines to avoid a specific type of virus protection. One of the antivirus engines depends on a signature pattern from a database to identify malicious files and viruses; the antivirus bypass exploit looks to alter the file being scanned so it is not detected.

Affected products

• Symantec Endpoint Protection: from 11.0, before 12.1.7454.7000 (fixed in 12.1.7454.7000); from 14.0, up to and including 14.2
• Symantec Endpoint Protection Cloud: before 22.15.1 (fixed in 22.15.1)
• Symantec Norton Antivirus: before 22.15 (fixed in 22.15)

Published 2018-11-29. Last modified 2026-06-17.