What is CVE-2016-9093?

CVE-2016-9093 is a high-severity vulnerability in Symantec Endpoint Protection, classified under Improper Input Validation. CVSS score: 7.0/10. Published 2018-04-16.

How severe is CVE-2016-9093?

High severity. CVSS v3 base score is 7.0 out of 10.

Improper input validation in Symantec Endpoint Protection

CVE-2016-9093

A version of the SymEvent Driver that shipped with Symantec Endpoint Protection 12.1 RU6 MP6 and earlier fails to properly sanitize logged-in user input. SEP 14.0 and later are not impacted by this issue. A non-admin user would need to be able to save an executable file to disk and then be able to successfully run that file. If properly constructed, the file could access the driver interface and potentially manipulate certain system calls. On all 32-bit systems and in most cases on 64-bit systems, this will result in a denial of service that will crash the system. In very narrow circumstances, and on 64-bit systems only, this could allow the user to run arbitrary code on the local machine with kernel-level privileges. This could result in a non-privileged user gaining privileged access on the local machine.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-04-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000

Affected products

Symantec Endpoint Protection — versions 12.1.6
Symantec Corporation Endpoint Protection — versions Prior to SEP 12.1 RU6 MP7

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securitytracker.com/id/1037961 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/96294 (VDB Entry, Third Party Advisory, vdb-entry)
www.symantec.com/security_response/securityupdates/detail.jsp (Vendor Advisory)

Frequently asked questions

What is CVE-2016-9093?: CVE-2016-9093 is a high-severity vulnerability in Symantec Endpoint Protection, classified under Improper Input Validation. CVSS score: 7.0/10. Published 2018-04-16.
How severe is CVE-2016-9093?: High severity. CVSS v3 base score is 7.0 out of 10.