CVE-2023-37250

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-08-20 · updated 2026-06-17
Weakness: CWE-367

Description

Unity Parsec has a TOCTOU race condition that permits local attackers to escalate privileges to SYSTEM if Parsec was installed in "Per User" mode. The application intentionally launches DLLs from a user-owned directory but intended to always perform integrity verification of those DLLs. This affects Parsec Loader versions through 8. Parsec Loader 9 is a fixed version.

Affected products

Unity Parsec: before 9.0 — fixed in 9.0

How to fix

Upgrade to a fixed version: Unity Parsec 9.0. Check the vendor advisory for mitigations.

References

https://support.parsec.app/hc/en-us/articles/18311425588237-CVE-2023-37250
https://unity3d.com
https://www.kb.cert.org/vuls/id/287122
https://support.parsec.app/hc/en-us/articles/18311425588237-CVE-2023-37250
https://unity3d.com
https://www.kb.cert.org/vuls/id/287122

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