CVE-2026-59131

This bug is like a “peek behind the curtain” that lets someone on the same computer (not over the internet) look at information that should stay hidden. It doesn’t usually let them change or shut down the system, but the leaked information could be useful for later attacks (like finding secrets).

This matters if your business uses any of these: Windows 10, Windows 11, and Windows Server 2012/2012 R2/2016/2019/2022/2025 running on AMD Zen processors. The issue requires local access (a person already on the machine), and low privileges are enough to attempt the read. The risk is mainly to systems where an attacker can get a foothold locally—such as through compromised user credentials or an untrusted user account.

This is a RED issue because attackers are actively being associated with the topic of the patch (new actor/actor-related press attention), and the flaw can expose confidential information with only local, low-privilege access. Even though no specific, dated public “exploited in the wild” claim for CVE-2026-59131 was provided here, the fix is available for your Windows versions, so you should prioritize patching now.