CVE-2021-47787CWE-428

CVE-2021-47787

High · published January 16, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
15.9
In the wild
Unconfirmed
What it is

⚡ An unquoted service path is the key to SYSTEM-level access! TotalAV 5.15.69 has a sneaky vulnerability that lets attackers play dirty. 🔥 Think of it like a delivery service that doesn’t check package labels; the delivery driver just drops off anything at the first address they see. In this case, if an attacker slips in a malicious executable, they can take over with the privileges of the LocalSystem! This vulnerability opens the door for attackers to install malicious software with SYSTEM-level privileges, meaning they could do anything from stealing sensitive data to taking full control of the system. It’s like leaving your front door wide open and inviting the bad guys in for a party they control!

Put simply

Think of it like a delivery service that doesn’t check package labels; the delivery driver just drops off anything at the first address they see. In this case, if an attacker slips in a malicious executable, they can take over with the privileges of the LocalSystem! The unquoted service path vulnerability in TotalAV allows attackers to place malicious executables in specific unquoted path segments. Since these services run with LocalSystem privileges, the executed code can lead to complete system compromise.

What to do

This vulnerability opens the door for attackers to install malicious software with SYSTEM-level privileges, meaning they could do anything from stealing sensitive data to taking full control of the system. It’s like leaving your front door wide open and inviting the bad guys in for a party they control! To mitigate this risk, ensure you update TotalAV to version 5.15.70 or later, which addresses the unquoted path vulnerability. Additionally, review and sanitize service paths to ensure they are properly quoted to avoid exploitation. Regular audits can help catch these vulnerabilities early! You’ve got this! Follow the steps to tighten security and keep your system safe. 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00253 · 15.9th percentile
Weakness
CWE-428 · Unquoted Search Path or Element
Published
2026-01-16T05:16Z
Affected products (1)
ProductVersionsFixed in
totalav/totalavall versions—
References (4)
EPSS history
Timeline
  • 15 JAN 23:25Z
    TotalAV 5.15.69 - Unquoted Service Path
    cvelistv5