Microsoft said the patches would get bigger. I measured how much bigger.
On 9 July 2026 the head of Windows published a post about AI-powered vulnerability discovery. One line in it was a warning to customers: "As AI helps defenders discover more issues, customers will see a higher volume of security updates included in each security release." It does not say how much higher. The post runs about 1400 words and contains no numbers at all. Five days later Microsoft shipped the July package: 1150 CVEs. The number Microsoft would not put in the blog post is sitting in Microsoft's own API. The Security Update Guide publishes every monthly package as machine-readable CVRF, acknowledgments included, no key required. So I pulled twelve months of it and did the arithmetic. What the data says I sampled eight months before the ramp and four after it. Month CVEs Month CVEs 2024-07 454 2026-04 737 2025-01 343 2026-05 991 2025-04 374 2026-06 1281 2025-07 527 2026-07 1150 2025-10 427 2026-01 310 2026-02 169 2026-03 460 The eight pre-ramp months average 383 CVEs. July 2026 is 1150, so the package is 3,0 times the old normal. The baseline broke in April and peaked in June at 1281. April to July inclusive is 4159 CVEs. At the old rate that is 10,9 months of output, delivered in four. The number I am not going to use February 2026 had 169 CVEs. It is the lowest month in two years, less than half the baseline. Divide July by February and you get 6,8 times, which is a much better number for a headline. I am not using it, because choosing your denominator is how honest people produce dishonest numbers. February is an outlier, and the only reason to anchor to it is that it flatters the story. The real multiplier is 3,0. It does not need help. It is not noise The obvious objection is that volume without quality is just a bigger pile. If AI were generating low-value findings that got patched anyway, the severity distribution would sag. It did the opposite. Measure 2025-07 2026-07 CVEs 527 1150 CVSS median 6,5 7,5 CVSS mean 6,47 7,26 CVSS 7,0 and above 48,0 % 71,