CVE-2026-54424Public exploit

SYSTEM code execution via user-controlled APPDATA path

Published Jul 4, 2026 · Updated Jul 4, 2026

Incorrect privileged API use in Unity Parsec before 150-104a allows local users to execute code as SYSTEM on Windows hosts. The pservice.exe named-pipe UPDATE command accepts a user-controlled APPDATA path and relaunches parsecd.exe with a duplicated SYSTEM token. Exploitation requires an authenticated local session and a Per User installation; Shared User installations are unaffected.

CVSS severity8.4
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect privileged API use in Unity Parsec before 150-104a allows local users to execute code as SYSTEM on Windows hosts. The pservice.exe named-pipe UPDATE command accepts a user-controlled APPDATA path and relaunches parsecd.exe with a duplicated SYSTEM token. Exploitation requires an authenticated local session and a Per User installation; Shared User installations are unaffected.

The record

CVE
CVE-2026-54424
Published
Jul 4, 2026
Updated
Jul 4, 2026
Vendor
Unity Technologies
Product
Parsec
Classifications
CWE-648, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 4, 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?

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

  1. Affected versionversion=0 <=v2026-05-04.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Unity Technologies · Parsecversion=0 <=v2026-05-04.0

Published CVSS scores

8.4MITRECVSS:3.1/AV:L/AC:L/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 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 exploitPublished

Weakness, pattern, technique

CWE-648Incorrect Use of Privileged APIs
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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