CVE-2025-63946Public exploit

Local privilege escalation via raced symbolic links

Published Feb 23, 2026 · Updated Feb 23, 2026

Link-following privilege escalation in Tencent PC Manager 17.10.28554.205 and earlier allows local users to execute programs as SYSTEM. During drive scans, SYSTEM-level QQPCRtp.exe deletes a user-writable temporary scan directory without preventing junction and symbolic-link redirection. A local user must win an OpLock-assisted race to replace the directory, redirecting the privileged deletion to an arbitrary target and enabling elevated execution.

CVSS severity7.4
High
EPSS probability0.18%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Link-following privilege escalation in Tencent PC Manager 17.10.28554.205 and earlier allows local users to execute programs as SYSTEM. During drive scans, SYSTEM-level QQPCRtp.exe deletes a user-writable temporary scan directory without preventing junction and symbolic-link redirection. A local user must win an OpLock-assisted race to replace the directory, redirecting the privileged deletion to an arbitrary target and enabling elevated execution.

The record

CVE
CVE-2025-63946
Published
Feb 23, 2026
Updated
Feb 23, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-59, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.4CISA-ADPCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 11, 2026Sep 17, 2026
Latest reporting daySep 17, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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