CVE-2025-59489: editor Argument Injection

Description

Unity Runtime before 2025-10-02 on Android, Windows, macOS, and Linux allows argument injection that can result in loading of library code from an unintended location. If an application was built with a version of Unity Editor that had the vulnerable Unity Runtime code, then an adversary may be able to execute code on, and exfiltrate confidential information from, the machine on which that application is running. NOTE: product status is provided for Unity Editor because that is the information available from the Supplier. However, updating Unity Editor typically does not address the effects of the vulnerability; instead, it is necessary to rebuild and redeploy all affected applications.

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CVSS v3.1 Score

7.4

HIGH

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-88 CWE-88

CWE-426 CWE-426

Affected Products

Vendor	Product	Versions
unity	editor	2017.4 — 2018.4
unity	editor	2019.1 — 2019.1.15f1
unity	editor	2019.2 — 2019.2.23f1
unity	editor	2019.3 — 2019.3.17f1
unity	editor	2019.4 — 2019.4.41f1
unity	editor	2020.1 — 2020.1.18f1
unity	editor	2020.2 — 2020.2.8f1
unity	editor	2020.3 — 2020.3.49f1
unity	editor	2021.1 — 2021.1.29f1
unity	editor	2021.2 — 2021.2.20f1
unity	editor	2021.3 — 2021.3.45f2
unity	editor	2022.1 — 2022.1.25f1
unity	editor	2022.2 — 2022.2.23f1
unity	editor	2022.3 — 2022.3.62f2
unity	editor	2023.1 — 2023.1.22f1
unity	editor	2023.2 — 2023.2.22f1
unity	editor	6000.0 — 6000.0.58f2
unity	editor	6000.1 — 6000.1.17f1
unity	editor	6000.2 — 6000.2.6f2
unity	editor	6000.3 — 6000.3.0b4
unity	editor	All
unity	editor	All
unity	editor	All
apple	macos	All
google	android	All
linux	linux_kernel	All
microsoft	windows	All

References

Advisories & Patches

https://unity.com/security/sept-2025-01

Exploits

https://flatt.tech/research/posts/arbitrary-code-execution-in-unity-runtime/

Other References

https://unity.com/security#security-updates-and-patches

Frequently Asked Questions

What is CVE-2025-59489? +

Unity Runtime before 2025-10-02 on Android, Windows, macOS, and Linux allows argument injection that can result in loading of library code from an unintended location. If an application was built with a version of Unity Editor that had the vulnerable Unity Runtime code, then an adversary may be able to execute code on, and exfiltrate confidential information from, the machine on which that application is running. NOTE: product status is provided for Unity Editor because that is the information available from the Supplier. However, updating Unity Editor typically does not address the effects of the vulnerability; instead, it is necessary to rebuild and redeploy all affected applications. It has a CVSS v3.1 base score of 7.4 (HIGH).

How severe is CVE-2025-59489? +

CVE-2025-59489 has a CVSS v3.1 score of 7.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-59489? +

CVE-2025-59489 affects products from apple, google, linux, microsoft, unity, specifically: android, editor, linux_kernel, macos, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-59489? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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