What is the CVSS score of CVE-2025-63946?

CVE-2025-63946 has a CVSS 3.1 base score of 7.4 (High). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2025-63946?

Yes, a public proof-of-concept exploit is available for CVE-2025-63946. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-63946?

Within 24 hours: Inventory all systems running Tencent PC Manager and restrict user access to affected versions where feasible. Within 7 days: Communicate advisory to affected users, disable or uninstall Tencent PC Manager if not business-critical, and consider alternative endpoint protection solutions. Within 30 days: Monitor vendor for patch availability and develop deployment plan; if no patch emerges, evaluate decommissioning the product in favor of supported alternatives.

Tencent CVE-2025-63946

HIGH

Improper Link Resolution Before File Access (CWE-59)

2026-02-23 cve@mitre.org

Windows Privilege Escalation Race Condition Pcmanager Tencent

7.4

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-59 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V5 - File Handling Symlink resolution safety
Impact	CVSS 7.4 (HIGH). Attack vector: Local. Complexity: High. Privileges required: None. User interaction: None. Exploitable via local access. Public exploit/POC available.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

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. [CVSS 7.4 HIGH]

RemediationAI

Monitor vendor advisories for a patch.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-59 (Improper Link Resolution Before File Access). Affects Pcmanager. 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.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.4 HIGH

AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Feb 26, 2026 - 16:31 vuln.today

Public exploit code

CVE Published

Feb 23, 2026 - 20:28 nvd

HIGH 7.4

DescriptionCVE.org

Executive ViewAI

Why It Matters

Tencent PC Manager versions through 17.10.28554.205 contain a privilege escalation vulnerability that could allow local users to gain elevated system access, potentially compromising Windows endpoints and enabling lateral movement or data theft. This affects organizations using Tencent PC Manager and requires immediate assessment and mitigation planning.

Business Impact: High

Compensating Controls

No patch currently available. Interim mitigations: (1) Restrict local administrative account access and enforce principle of least privilege; (2) Monitor process execution logs for suspicious privilege escalation attempts; (3) Disable Tencent PC Manager features if not essential; (4) Implement application whitelisting to prevent unauthorized executable execution; (5) Isolate affected systems from sensitive network segments; (6) Consider uninstalling the product in favor of patched endpoint protection solutions.

Threat Intelligence Overview

EPSS Score

0.0%

Top 94% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +37

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Race Condition MEDIUM

Race conditions occur when multiple concurrent requests exploit the brief time gap between checking a condition and acting upon it (TOCTOU - Time of Check, Time of Use).