Unquoted Service Path Vulnerability in Program Access Controller by Gearbox Computers
CVE-2020-36987

8.5HIGH

Key Information:

Vendor

Gearboxcomputers

Status
Program Access Controller
Vendor
CVE Published:
28 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36987?

The Program Access Controller version 1.2.0.0 is affected by an unquoted service path vulnerability in the PACService.exe file. This flaw allows local attackers to exploit the unquoted service path during system startup or reboot, potentially enabling them to execute arbitrary code with elevated LocalSystem privileges. An attacker can create a malicious executable in a directory that is searched before the legitimate service executable, thereby gaining control over the affected system.

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Affected Version(s)

Program Access Controller 1.2.0.0

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-2020-36987 - Proof of Concept

References

https://www.exploit-db.com/exploits/48966
exploit
https://www.gearboxcomputers.com/
product
https://www.vulncheck.com/advisories/program-access-contr...
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

Mohammed Alshehri
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