CVE-2025-63946

HighPublic PoC

Published: 23 February 2026

Published

23 February 2026

Modified

26 February 2026

KEV Added

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Patch

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CVSS Score 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0004 10.7th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-63946 is a high-severity Link Following (CWE-59) vulnerability in Tencent Pcmanager. Its CVSS base score is 7.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 10.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploitation for Privilege Escalation (T1068).

Threat & Defense Details

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

Why these techniques?

Direct local privilege escalation via race condition in Windows application, enabling arbitrary code execution with elevated rights.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

A privilege escalation (PE) vulnerability in the Tencent PC Manager app thru 17.10.28554.205 on Windows devices enables a local user to execute programs with elevated privileges. However, execution requires that the local user is able to successfully exploit a race…

condition.

Deeper analysisAI

CVE-2025-63946 is a privilege escalation vulnerability (CWE-59) affecting the Tencent PC Manager application through version 17.10.28554.205 on Windows devices. The flaw enables a local user to execute arbitrary programs with elevated privileges by exploiting a race condition in the application.

The vulnerability can be exploited by a local attacker requiring no privileges (PR:N), though it has high attack complexity (AC:H) due to the need to successfully trigger the race condition. No user interaction is required (UI:N), and exploitation occurs with local attack vector (AV:L) and unchanged scope (S:U), resulting in high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H). The CVSS v3.1 base score is 7.4.

Proof-of-concept exploit code and details are available in GitHub repositories at https://github.com/alexlee820/CVE-2025-63946-Tencent-PC-Manager-EoP/blob/main/README.md and https://github.com/alexlee820/Tencent-PC-Manager-EoP.