Unity Discloses A Years-Old Security Exploit And Urges Developers To Update Their Games
Unity has sounded the alarm after revealing a years-old security exploit that could impact games built with its popular engine. In a detailed post, the company urged developers to update their games immediately to patch the vulnerability, which affects Unity versions dating back to 2017.
While Unity emphasized that there’s “no evidence of exploitation or user impact,” the company has already rolled out fixes. According to a blog post by Larry Hryb (Major Nelson), developers using Unity 2017.1 or later on Windows, Android, or macOS need to take “immediate action.”
Unity’s Security Alert: Developers Must Update Now
Unity discloses a years-old security exploit and urges developers to update their games as soon as possible to prevent potential risks. The company confirmed that platform partners like Valve, Microsoft, Google, and Meta have already deployed protective measures.
Valve, for instance, has released a new Steam update with mitigations, while Microsoft updated Windows Defender to detect and block the vulnerability. Google and Meta have taken additional security steps to protect their ecosystems. Fortunately, Unity reports “no findings to suggest” that the exploit affects iOS, visionOS, tvOS, Xbox, PlayStation, Nintendo Switch, Quest, or WebGL platforms.
Major Studios Take Swift Action
Several major game studios have already responded. Obsidian Entertainment temporarily pulled multiple titles — including Grounded 2 Founders Edition, Avowed Premium Edition, Pillars of Eternity, and Pentiment — until they can apply Unity’s security updates.
Other popular games such as Marvel Snap, No Rest for the Wicked, Ingress, and Fate/Grand Order have already received patches addressing the exploit. Meanwhile, Atlus confirmed that Persona 5: The Phantom X will soon get an update to mitigate the issue.
How The Unity Exploit Works
According to the Common Vulnerabilities and Exposures (CVE) record, the exploit could allow malicious actors to execute code remotely or steal confidential data from affected systems. Essentially, if an app was built using a vulnerable version of the Unity Runtime, attackers could run harmful code on the user’s machine.
This type of vulnerability poses a serious risk to both developers and players, especially for games distributed across multiple platforms and storefronts.
Unity’s Response And Next Steps
Unity has already released patched versions of its engine to fix the exploit and is actively working with partners to ensure developers apply updates quickly. The company also reassured users that there’s currently no evidence of real-world attacks, but proactive action is necessary to maintain security.
For developers, the message is clear: update your Unity-built games immediately to protect both your users and your projects.
By revealing this exploit, Unity shows a strong commitment to transparency and user safety. As cyber threats grow more sophisticated, even long-standing software vulnerabilities can pose unexpected risks. Developers relying on Unity should act fast — update, test, and secure their builds before releasing future updates or DLC.
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