Microsoft’s October release carried more than 1,400 CVEs, and I think any security team that sets its week by that number has the wrong plan, because the order of work should come from exploitation and exposure.
What the release actually contains
Microsoft’s October 2026 release notes list more than 1,400 Microsoft CVEs. Windows accounts for 1,102 of them, spread across 39 distinct updates. Office has 134, Developer Tools 61, SharePoint Server 36, SQL Server 22, Azure 15 and Exchange Server 7. The notes name exactly two notable items. CVE-2026-96951, a Windows Shell security feature bypass, is marked as exploitation detected. CVE-2026-108398, a .NET Framework security feature bypass, is marked as publicly disclosed.
That is one exploited flaw and one disclosed flaw in a release of this size. We covered September’s record Patch Tuesday and the wormable DNS bug inside that load, and the pattern holds. The total grows each month. The handful of items that need action this week stays small.
The strongest case for the count
The argument for taking the number seriously deserves a fair statement. A larger release means more flaws that attackers can study, and Microsoft’s own data marks many of them as likely targets. The Security Update Guide data for the release lists 72 entries rated Critical and 108 assessed by Microsoft as more likely to be exploited. A team that treats a record month like an ordinary one could miss a flaw that turns into the next exploited bug.
I accept that risk. It argues for sorting the list. Microsoft’s own assessments are fields on each entry, so the list of 108 can be sorted and worked first. A raw count above 1,400 gives a team nothing to sort by.
Where the count misleads
For Windows, the unit of work is the cumulative update. The release notes say Windows 10 and Windows 11 updates are cumulative and that each monthly release includes all security fixes for the vulnerabilities that affect them. A fleet that installs the month’s update takes all 1,102 Windows fixes in one pass. Whether the month holds 300 CVEs or 1,400 changes the reading list for the analyst. It barely changes the deployment job.
The same week shows where the risk sat. Ivanti disclosed one vulnerability in Connect Secure and said: “If you are running one of the impacted versions, Ivanti recommends you act immediately.” Volexity, which found the exploitation, reported that attackers chained three flaws to reach root on a fully patched appliance and went after directory credentials. One CVE on an Internet-facing gateway, with exploitation already under way, outranks the bulk of a monthly Windows release. Ivanti’s own post says it is aware of limited exploitation in the wild.
Timing sharpens the point. Volexity dates the first exploitation of the Ivanti chain to October 3, ten days before the fix shipped. Patch Tuesday, and the count that comes with it, arrives on a calendar that attackers do not follow. A team that waits for the second Tuesday to review its gateways has accepted that window by default. A standing watch on vendor advisories and the CISA catalog shortens it, and so does a short list of the systems whose compromise would hand an attacker credentials.
Our piece on an exposure inventory deciding the first hour after an advisory argued the same ordering from the other direction. A team that knows which systems face the Internet can rank in minutes. A team that knows only the CVE count has nothing to rank with.
What I would do on Monday
Put exploitation status first. Take the vendor’s exploited and publicly disclosed flags, plus the CISA Known Exploited Vulnerabilities catalog, and patch anything on that list before anything else. Put Internet-facing systems second: VPN gateways, mail servers and anything that answers from outside. Put credential-bearing systems third, meaning domain controllers, identity servers and the service accounts that hang off gateways. Only then work down Microsoft’s exploitation-likelihood ratings for the rest.
Track time to closure for the top tier alone, because that is the number that shows how long a real exposure stayed open. Report that order to leadership instead of the total. A board slide that says 1,400-plus patches describes Microsoft’s workload. A slide that says the one exploited flaw is closed on every endpoint, and the gateway is rebuilt and checked, describes our own risk.
Source: Microsoft Security Response Center, October 2026 Security Updates release notes
