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July 2026 Patch Tuesday Fixes Record 570 Flaws Including Three 0-Days

July 21, 2026

Scanning down the seemingly endless and astonishing list of security vulnerabilities that were fixed with July’s update, it occurred to me that we would now be needing AI’s help just to keep track of all the problems being discovered and repaired. Among the record-breaking-by-a-large-margin 570 security vulnerabilities fixed, 59 of those were rated CRITICAL and 48 of those 59 CRITICAL vulnerabilities allowed for remote code execution.

July’s Microsoft Patch Tuesday addressed a record-breaking 570 security vulnerabilities, far surpassing previous months, with 59 rated CRITICAL. Of those critical ones, 48 enabled remote code execution and 9 allowed attackers to obtain system privileges. Overall, 145 of the 570 flaws (over 25%) enabled remote code execution, and 254 (45%) allowed unprivileged attackers to escalate to root system access.

Each of the past three months has broken Microsoft’s all-time security vulnerability patch record by significant and growing margins, indicating no restriction on the rate of discovery and disclosure. The host predicts that while many patches will continue next month, the counts will start to drop off, though future AI model improvements may unearth more subtle flaws, preventing a drop to zero soon.

July, following June’s 200 flaws, is suspected to be the all-time motherlode of vulnerabilities. Three weeks from the podcast date will reveal if this prediction holds true regarding declining patch volumes.

Tags: SECURITY | MICROSOFT | VULNERABILITY | PATCHING

Source: sn-1088-notes.pdf

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