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CVE-2026-3991

HIGH CVSS 3.1: 7.8 EPSS 0.01%
Updated Mar 30, 2026
Symantec
Parameter Value
CVSS 7.8 (HIGH)
Affected Versions before 25.1
Type CWE-829 (Inclusion of Functionality from Untrusted Source)
Vendor Symantec
Public PoC No

Symantec Data Loss Prevention Windows Endpoint, prior to 25.1 MP1, 16.1 MP2, 16.0 RU2 HF9, 16.0 RU1 MP1 HF12, and 16.0 MP2 HF15, may be susceptible to a Elevation of Privilege vulnerability, which is a type of issue whereby an attacker may attempt to compromise the software application to gain elevated access to resources that are normally protected from an application or user.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1