What is the CVSS score of CVE-2021-47866?

CVE-2021-47866 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of WordPress are affected by CVE-2021-47866?

Organizations using WIN-PACK PRO 4.8 face notable risk from CVE-2021-47866 rated CVSS 7.8. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2021-47866?

Yes, a public proof-of-concept exploit is available for CVE-2021-47866. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2021-47866?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

WordPress CVE-2021-47866

HIGH

Unquoted Search Path or Element (CWE-428)

2026-01-21 disclosure@vulncheck.com

WordPress Code Injection

7.8

CVSS 3.1

CVSS VectorNVD

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

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 26, 2026 - 15:04 vuln.today

Public exploit code

CVE Published

Jan 21, 2026 - 18:16 nvd

HIGH 7.8

DescriptionNVD

WIN-PACK PRO 4.8 contains an unquoted service path vulnerability in the GuardTourService that allows local users to potentially execute code with elevated system privileges. Attackers can exploit the unquoted path in C:\Program Files <x86>\WINPAKPRO\WP GuardTour Service.exe to inject malicious code that would execute during service startup.

AnalysisAI

GuardTourService contains a vulnerability that allows attackers to potentially execute code with elevated system privileges (CVSS 7.8).

Technical ContextAI

affects GuardTourService. WIN-PACK PRO 4.8 contains an unquoted service path vulnerability in the GuardTourService that allows local users to potentially execute code with elevated system privileges. Attackers can exploit the unquoted path in C:\Program Files <x86>\WINPAKPRO\WP GuardTour Service.exe to inject malicious code that would execute during service startup.