CVE-2021-47780

HIGH
2026-01-16 [email protected]
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 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 21, 2026 - 22:24 vuln.today
Public exploit code
CVE Published
Jan 16, 2026 - 00:16 nvd
HIGH 7.8

Tags

RCE Macro Expert

Description

Macro Expert 4.7 contains an unquoted service path vulnerability that allows local users to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the improperly configured service path to inject malicious executables that will be run with LocalSystem permissions during service startup.

Analysis

Macro Expert versions up to 4.7 contains a vulnerability that allows attackers to potentially execute arbitrary code with elevated system privileges (CVSS 7.8).

Technical Context

affects Macro Expert. Macro Expert 4.7 contains an unquoted service path vulnerability that allows local users to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the improperly configured service path to inject malicious executables that will be run with LocalSystem permissions during service startup.

Affected Products

Vendor: Macro-Expert. Product: Macro Expert. Versions: up to 4.7.

Remediation

Monitor vendor advisories for a patch.

Priority Score

59
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: +20

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CVE-2021-47780 vulnerability details – vuln.today
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