CVE-2018-12238
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.
Key facts
- CVSS score
- 7.8 (v3.0)
- Severity
- HIGH
- CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- EPSS score
- 0.4% (33th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2018-4216)
- Published
- November 29, 2018
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2018-4216 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.
View on the EU Vulnerability DatabaseAffected products
- symantec / endpoint protection
- symantec / endpoint protection cloud
- symantec / norton antivirus
Certified products that may be affected
2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Symantec™ Endpoint Protection Version 12.1.2 - Symantec Corporation - Common Criteria 383-4-217 - archived
- Symantec™ Endpoint Protection Version 11.0 - Symantec Corporation - Common Criteria 383-4-84 - archived
References
- http://www.securityfocus.com/bid/105917(Third Party Advisory, VDB Entry)
- https://support.symantec.com/content/unifiedweb/en_US/article.SYMSA1468.html(Mitigation, Vendor Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain