Unquoted Service Path Vulnerability in Macro Expert by Macro Expert
CVE-2021-47780

8.5HIGH

Key Information:

Vendor

Macro-expert

Status
Macro Expert
Vendor
CVE Published:
15 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47780?

Macro Expert 4.7 is susceptible to an unquoted service path vulnerability, where local users can exploit the misconfigured service path. This vulnerability enables attackers to execute arbitrary code with elevated privileges by injecting malicious executables that are executed with LocalSystem permissions during the service startup process. It is crucial for users of this software to understand the risks associated with this vulnerability and take appropriate measures to mitigate potential threats.

Affected Version(s)

Macro Expert 4.7

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47780 - Proof of Concept

References

https://www.exploit-db.com/exploits/50431
exploit
http://www.macro-expert.com/
product
https://www.vulncheck.com/advisories/macro-expert-unquote...
third-party-advisory

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mert DAŞ
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