CVE-2024-25376

SYSTEM code execution via temporary-file race

Published Apr 11, 2024 · Updated Mar 13, 2025

Local privilege escalation in Thesycon TUSBAudio installers after 5.40.0 and before 5.68.0 allows local users to execute code as SYSTEM. The installer copies tlsetupfx.exe into the local user's temporary directory and launches it with SYSTEM privileges during /fa repair, creating a race in which DLLs can be replaced before loading. A low-privileged local user must trigger MSI repair and win the race; success provides SYSTEM-level code execution.

CVSS severity7.8
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in Thesycon TUSBAudio installers after 5.40.0 and before 5.68.0 allows local users to execute code as SYSTEM. The installer copies tlsetupfx.exe into the local user's temporary directory and launches it with SYSTEM privileges during /fa repair, creating a race in which DLLs can be replaced before loading. A low-privileged local user must trigger MSI repair and win the race; success provides SYSTEM-level code execution.

The record

CVE
CVE-2024-25376
Published
Apr 11, 2024
Updated
Mar 13, 2025
Vendor
Thesycon
Product
TUSBAudio
Classifications
CWE-94, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.68.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Thesycon · TUSBAudioversion=0 <5.68.0

Published CVSS scores

7.8CISACVSS:3.1/AV:L/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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