CVE-2026-3991

| EUVD-2026-17164 HIGH
2026-03-30 symantec GHSA-6r2p-x2m4-j49c
7.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 30, 2026 - 18:45 vuln.today
EUVD ID Assigned
Mar 30, 2026 - 18:45 euvd
EUVD-2026-17164
CVE Published
Mar 30, 2026 - 18:27 nvd
HIGH 7.8

Description

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.

Analysis

Elevation of privilege in Symantec Data Loss Prevention Windows Endpoint allows authenticated local users to gain SYSTEM-level access and compromise protected resources. Affects all versions prior to 25.1 MP1, 16.1 MP2, 16.0 RU2 HF9, 16.0 RU1 MP1 HF12, and 16.0 MP2 HF15. …

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Remediation

Within 24 hours: Identify all endpoints running Symantec DLP versions prior to 25.1 MP1, 16.1 MP2, 16.0 RU2 HF9, 16.0 RU1 MP1 HF12, or 16.0 MP2 HF15 using asset inventory or endpoint management tools. Within 7 days: Prioritize upgrade of critical systems handling sensitive data to patched versions (25.1 MP1 or later for current installs; version-appropriate patches for legacy deployments). …

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Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: 0

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CVE-2026-3991 vulnerability details – vuln.today

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