[Single source] Microsoft fixes 1,093 flaws in Windows and supported software

Microsoft has released fixes for 1,093 vulnerabilities across Windows and supported software, according to KrebsOnSecurity. The November batch includes 63 critical flaws, while Microsoft says one Outlook vulnerability, CVE-2026-124194, is already being exploited.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list

The November Patch Tuesday release addresses 1,093 vulnerabilities. Of these, 63 are rated critical, meaning they may let an attacker take control of a Windows system with little or no user involvement.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list

The scale is not the only concern. Nearly half of the critical flaws reportedly allow remote code execution, which means malicious code could run on a vulnerable machine from elsewhere, and 535 flaws could enable attackers to gain higher privileges after obtaining some access.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list

Users and administrators should review and deploy the available Microsoft updates promptly, prioritizing affected Outlook, Microsoft 365 Apps for Enterprise and Office installations because the reported Outlook flaw is already under active exploitation.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list

The report identifies CVE-2026-124194 as the only flaw in this batch known by Microsoft to be actively exploited and describes it as an Outlook spoofing vulnerability. The supplied evidence does not specify how attacks work, who is conducting them, how widespread they are or which exact Office versions are affected.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list

Microsoft credits advances in artificial intelligence with helping researchers find and fix the unusually large number of security bugs disclosed in recent months, according to KrebsOnSecurity.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list

The November release follows a batch of more than 1,400 fixes in October. KrebsOnSecurity reports that Microsoft has issued more than 5,100 security patches so far in 2026, compared with an average of roughly 100 patches per month a year earlier.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list

1 independent groups, 1 updates, and 0 engagements.

The batch contains several high-impact vulnerability classes: remote code execution among nearly half of the 63 critical flaws, privilege escalation in 535 cases and spoofing in CVE-2026-124194. Spoofing generally involves making malicious content or activity appear trustworthy, although the supplied report does not describe this flaw’s specific mechanism.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list

This account relies on one KrebsOnSecurity report, which provides the vulnerability totals and summarizes Microsoft’s advisory for CVE-2026-124194. Because the underlying Microsoft bulletins are not included in the supplied evidence, detailed product matrices, severity assessments and exploitation claims remain secondhand here.[1]Microsoft Fixes Nearly 1,100 Security Vulnerabilitieskrebsonsecurity.com · rssOpen original sourceSee in source list