Patch Tuesday, May 2026 Edition
Source Krebs on Security
Mentioned vulnerabilities
Rated Critical by Threat Radar from the Krebs on Security text
Data as of 9 Jun 2026, 11:56 UTC
What to do
AI-suggested
Patches are available and should be applied promptly. Microsoft has released official fixes for all affected Windows Server versions from 2012 onward. Apple, Google, Mozilla, and Oracle have also released updates addressing their respective vulnerabilities. Users and administrators should follow vendor guidance to install these updates. Since this is a routine Patch Tuesday release with no active zero-day exploitation, applying the official patches will mitigate the risks. No additional or alternative mitigations are indicated by the vendor advisories.
Description
The May 2026 Patch Tuesday update highlights a significant volume of security vulnerabilities fixed by major software vendors including Microsoft, Apple, Google, Mozilla, and Oracle. Microsoft addressed 118 vulnerabilities, including 16 critical ones such as a stack-based buffer overflow in Windows Netlogon and a critical elevation of privilege bypassing Entra ID. No zero-day exploits were fixed this cycle. Apple, Google Chrome, Mozilla Firefox, and Oracle also released numerous patches, many discovered with the aid of AI tools. This update cycle reflects an accelerated patch cadence and a focus on critical security flaws.