Improper input validation in Symantec Endpoint Protection
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Symantec | Endpoint Protection | Prior to SEP 12.1 RU6 MP7 | — | No fix listed | CNA |
- Endpoint Protection VendorSymantec Affected Prior to SEP 12.1 RU6 MP7 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:* | up to 12.1.6 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp1:*:*:*:*:*:* | 12.1.6 mp1 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp1a:*:*:*:*:*:* | 12.1.6 mp1a | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp2:*:*:*:*:*:* | 12.1.6 mp2 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp3:*:*:*:*:*:* | 12.1.6 mp3 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp4:*:*:*:*:*:* | 12.1.6 mp4 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp5:*:*:*:*:*:* | 12.1.6 mp5 | Vulnerable | Symantec |
| cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp6:*:*:*:*:*:* | 12.1.6 mp6 | Vulnerable | Symantec |
- cpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:* Versions up to 12.1.6 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp1:*:*:*:*:*:* Versions 12.1.6 mp1 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp1a:*:*:*:*:*:* Versions 12.1.6 mp1a Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp2:*:*:*:*:*:* Versions 12.1.6 mp2 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp3:*:*:*:*:*:* Versions 12.1.6 mp3 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp4:*:*:*:*:*:* Versions 12.1.6 mp4 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp5:*:*:*:*:*:* Versions 12.1.6 mp5 Vulnerable ·Symantec
- cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp6:*:*:*:*:*:* Versions 12.1.6 mp6 Vulnerable ·Symantec
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-9093
- 2026-10-03 Alias added: GHSA-x9r7-96pf-frgq
References
More Symantec Endpoint Protection vulnerabilities
- TI-2009-01353 The Intel LANDesk Common Base Agent (CBA) in Symantec Alert Management System 2 (AMS2)… CVSS 2.0HIGH 10.0
- TI-2009-01354 Multiple stack-based buffer overflows in IAO.EXE in the Intel Alert Originator Service in… CVSS 2.0HIGH 9.3
- TI-2016-02020 The AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP); Symantec… CVSS 3.0HIGH 7.8
- TI-2012-01284 The ZIP file parser in AhnLab V3 Internet Security 2011.01.18.00, AVG Anti-Virus… CVSS 2.0MEDIUM 4.3
- TI-2012-01283 The Gzip file parser in AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Command Antivirus… CVSS 2.0MEDIUM 4.3
- TI-2012-01281 The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2016-9093 · CVE Program
- CVE-2016-9093 · NVD
- FIRST EPSS
- GHSA-x9r7-96pf-frgq · GitHub Advisory Database · CC BY 4.0
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