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TL;DR
Microsoft’s November 10, 2026, Patch Tuesday release notes list 1,094 Microsoft CVEs, including an Outlook flaw Microsoft says was exploited before a fix was available. A separate Paint vulnerability has a reported version mismatch: the working fix was identified in November, but some users may not yet see it.
Microsoft’s November 10, 2026, Patch Tuesday release lists fixes for 1,094 Microsoft CVEs, including an Outlook vulnerability the company marks as exploited. Separately, a fix for a Paint flaw has been reported as available in a later app version, but some users may not yet be receiving it.
The Outlook issue, CVE-2026-124194, is rated Moderate by Microsoft, with a CVSS score of 6.5. The company labels it “Exploitation Detected.” Its description says an unauthenticated attacker could send a specially crafted file that, if opened, could expose a user’s NTLMv2 password hash. The Cybersecurity and Infrastructure Security Agency added the flaw to its catalog of known exploited vulnerabilities on November 10, according to the source report.
Microsoft’s release notes break the CVE count down by product family: 726 for Windows, 174 for Office, 59 for SQL Server, 53 for Developer Tools, 27 for SharePoint Server, 25 for other products, 20 for Azure, nine for Exchange Server and one for Defender. The release notes say 1,094 Microsoft CVEs were included. Krebs on Security counted 1,093 published on November 10; the difference is a cloud flaw published five days earlier, according to the source report.
The Paint issue is CVE-2026-83844, published on October 13. The report says the version Microsoft initially identified as fixed remained vulnerable, citing German technology publication heise. A working version, 11.2609.401.0, was identified on November 6, while PC Gamer reported that it was still not appearing for some users. The source advises checking Paint separately through the Microsoft Store rather than assuming the Windows security update installs that app fix.
Microsoft’s November Patch Tuesday fixes 1,094 CVEs
The release includes an Outlook flaw Microsoft says was exploited before a fix was available. Paint’s reported fix may still need a separate check.
Prioritize Outlook and Office
CVE-2026-124194 is rated Moderate, but Microsoft marks it “Exploitation Detected.”
Review which Microsoft products your organization uses and which fixes apply.
The source report recommends these first, then applicable Critical server flaws.
Follow your organization’s testing and deployment process.
What the Outlook flaw means
The report describes a potential exposure if a user opens a specially crafted file.
- Microsoft marks the flaw as exploited.
- CISA added it to its known exploited vulnerabilities catalog on November 10.
- Opening the file could expose a user’s NTLMv2 password hash.
- The scale of attacks and number of affected users are not specified.
Verify Paint separately
The reported working version is 11.2609.401.0, but some users may not yet see it.
- Check Paint through the Microsoft Store.
- Confirm whether the installed version is 11.2609.401.0.
- Availability and the timing of wider distribution remain unclear.
Counts need context
The total describes listed vulnerabilities, not how many systems are affected or how severe every issue is.
| Product family | CVEs |
|---|---|
| Windows | 726 |
| Office | 174 |
| SQL Server | 59 |
| Developer Tools | 53 |
| SharePoint Server | 27 |
| Other products | 25 |
| Azure | 20 |
| Exchange Server | 9 |
| Defender | 1 |
Prioritize the Exploited Outlook Flaw
The headline count signals a large update workload for organizations, but the Outlook flaw’s exploitation status gives it particular urgency. Microsoft rates it Moderate, not Critical, yet says attackers have already exploited it. That is a reminder that severity labels alone do not describe whether a vulnerability is being used in real attacks.
For administrators, the practical task is to identify which affected products are deployed, apply relevant updates, and account for systems where patching must be tested or scheduled. The source report recommends addressing Outlook and Office first, then reviewing Critical server flaws that apply to each organization. Home users should also verify the Paint app version separately if they are relying on its fix.
The volume can increase the effort required to triage and deploy updates, but it does not mean every listed flaw presents the same exposure to every reader. Microsoft’s CVE total covers a range of products and severities; the relevant fixes depend on software in use and the specific vulnerability.
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A Sharp Rise in Microsoft’s Counts
The November total is far above the same month a year earlier. Microsoft’s release notes listed 63 CVEs in November 2025, compared with 1,094 in November 2026. The source author’s review of Microsoft’s monthly release data found totals rising during 2026, including 220 in June, 663 in July, 999 in September and 1,474 in October. These figures describe the number of CVEs listed, not a measure of how many systems were affected or how severe the month’s vulnerabilities were.
There is a small difference in how sources count November’s entries. The report says Microsoft’s machine-readable November file contains 1,342 entries, including vulnerabilities from other vendors that Microsoft republishes, mostly Chrome issues relevant to Edge. After separating those entries and accounting for the earlier Entra Device Registration flaw, the report reconciles the release-note total with Krebs on Security’s count of 1,093 vulnerabilities published November 10.
Microsoft has previously linked rising vulnerability discoveries to improved automation, outside researchers and advances in AI. In a May post, Microsoft Security Response Center Vice President of Engineering Tom Gallagher said AI models were part of the discovery process and that releases could continue to grow for some time. The November tally alone does not establish how much AI contributed to finding these particular flaws.
It is not clear from the available reporting why the Paint version identified as working has not appeared for some users, how widely the delivery issue affects users, or when distribution will be complete. Microsoft’s release notes and the reports cited here do not settle those questions.
Microsoft has also not disclosed how many November fixes were found with AI tools. The source report says 24 of the 1,093 entries published November 10 credit researchers as working “using” an AI model: 23 cite GLM from z.ai and one cites Claude. Those public credit lines do not reveal Microsoft’s internal tool use, so they cannot establish the share of vulnerabilities discovered with AI.
The source material gives a detailed description of the Outlook flaw’s potential impact but does not provide a full account of attacks, affected users, or how widely exploitation has occurred. The exploitation label and CISA listing are confirmed in the report; the scale of attacks is not specified.
Check Updates Across Affected Products
Microsoft customers should review the November Security Update Guide for fixes relevant to their installed products and apply updates according to their organization’s testing and deployment process. The source report places Outlook and Office at the top of its suggested review, followed by Critical server flaws that apply to the organization’s systems.
Users should check Microsoft Store separately for Paint and confirm whether the installed version is 11.2609.401.0, the version the source report identifies as working. Further information is needed to establish when the update will appear for users who cannot yet find it. Microsoft’s next monthly security release is expected on the usual Patch Tuesday schedule, but the source material does not provide a specific forecast for its size.
Key Questions
How many CVEs did Microsoft list in its November 2026 release?
Microsoft’s November 10 release notes list 1,094 Microsoft CVEs. Krebs on Security counted 1,093 published that day; the source report says the one-item difference is a cloud flaw published on November 5.
Which November flaw does Microsoft mark as exploited?
CVE-2026-124194, an Outlook spoofing vulnerability, is marked “Exploitation Detected.” Microsoft rates it Moderate, with a CVSS score of 6.5. The source report says opening a specially crafted file could expose a user’s NTLMv2 password hash.
Is the Paint vulnerability fixed?
The source report identifies Paint version 11.2609.401.0 as a working version for CVE-2026-83844, but says some users still cannot see it in the Microsoft Store. The extent and timing of that availability issue are unclear.
Did AI find most of the November vulnerabilities?
The available information does not establish how many November flaws were found using AI. The source report counts 24 public researcher credit lines mentioning an AI model, but those credits do not show Microsoft’s internal tools or account for every discovery method.
Source: ThorstenMeyerAI.com
