CVE-2020-36987CWE-428

Program Access Controller v1.2.0.0 - 'PACService.exe' Unquoted Service Path

High Β· published January 28, 2026

CVSS v4.0
8.5
EPSS
0%
Percentile
6.8
In the wild
Unconfirmed
What it is

⚑ A sneaky unquoted service path in PACService.exe could let attackers upgrade their access like a kid sneaking into the adult section of a library! πŸ“š Think of it like a poorly labeled delivery box that allows anyone to slip in a package without checking the contents β€” the system doesn't verify the executable it's about to run. This unquoted path makes it easy for attackers to inject malicious code during startup or reboot, gaining control with elevated privileges. An attacker could potentially execute arbitrary code with LocalSystem permissions, bringing the entire system to its knees! This means they could access sensitive data, manipulate system settings, or even create backdoors for future attacks β€” absolutely devastating!

Put simply

Think of it like a poorly labeled delivery box that allows anyone to slip in a package without checking the contents β€” the system doesn't verify the executable it's about to run. This unquoted path makes it easy for attackers to inject malicious code during startup or reboot, gaining control with elevated privileges. This unquoted service path vulnerability enables local attackers to run malicious executables with elevated privileges whenever the system starts up, due to the lack of quotation marks in the service path definition.

What to do

An attacker could potentially execute arbitrary code with LocalSystem permissions, bringing the entire system to its knees! This means they could access sensitive data, manipulate system settings, or even create backdoors for future attacks β€” absolutely devastating! To secure your system, immediately patch to version 1.2.0.1, which addresses this vulnerability. Additionally, ensure that all service paths are properly quoted in the service configuration to prevent future exploits. Regularly audit service configurations and permissions to maintain a strong security posture. You've got this! Follow these steps and you'll bolster your defenses like the superhero you are! πŸ¦Έβ€β™‚οΈ

The record
Technical detail
CVSS v4.0
8.5 Β· HIGH
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00176 Β· 6.8th percentile
Weakness
CWE-428 Β· Unquoted Search Path or Element
Published
2026-01-28T12:29Z
EPSS history
Timeline
  • 28 JAN 12:29Z
    Program Access Controller v1.2.0.0 - 'PACService.exe' Unquoted Service Path
    cvelistv5