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Microsoft Patch Tuesday November 2027 - SANS ISC

SANS Internet Storm CenterBy SANS Internet Storm Center69 min read

Our summary

Microsoft's November 2027 Patch Tuesday delivers fixes for a staggering 1,260 vulnerabilities, continuing the trend of AI-driven discovery swelling patch volumes, with 68 rated critical and 167 tied to Chromium components bundled into Microsoft Edge. Among the flaws, CVE-2026-124194, a spoofing bug in Outlook, is confirmed as actively exploited in the wild, making it the top priority for defenders this month. Several other issues stand out for their severity, including a critical remote code execution flaw in Microsoft LDAP (CVE-2026-119958), a cluster of critical RCE bugs affecting Microsoft Queuing and Queue Manager (CVE-2026-109459, CVE-2026-119967, CVE-2026-116710, CVE-2026-119963, CVE-2026-119964), and a Windows TCP/IP remote code execution vulnerability (CVE-2026-113859) carrying a more modest CVSS score of 7.5. Given the scale of the release and the presence of in-the-wild exploitation, organizations should prioritize patching Outlook and the LDAP/MSMQ components without delay.

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From SANS Internet Storm Center

Microsoft continues its AI-induced patch surge, addressing 1,260 different vulnerabilities this month. 68 of these vulnerabilities are considered critical. 167 of the vulnerabilities are Chromium issues affecting Microsoft Edge.

One of the vulnerabilities, CVE-2026-124194, a spoofing vulnerability in Outlook, is already being exploited.…

Continue at SANS Internet Storm Center
  1. BleepingComputerMicrosoft November 2026 Patch Tuesday fixes 1,235 flaws, Outlook zero-dayCVE-2026-100204, CVE-2026-100223 +1258
  2. Cisco TalosMicrosoft Patch Tuesday for November 2026 — Snort rules and prominent vulnerabilitiesCVE-2026-105501, CVE-2026-105524 +100
  3. Dark ReadingNovember Patch Tuesday: An Overflowing Cornucopia of CVEsCVE-2026-110043, CVE-2026-116928 +4
  4. The Hacker News⚡ Weekly Recap: SSHole Exploited, APT Root RCE, Robot Takeovers, 15K Hacked Sites, and MoreCVE-2026-121035, CVE-2026-121126 +1
  5. Krebs on SecurityMicrosoft Fixes Nearly 1,100 Security Vulnerabilities – Krebs on SecurityCVE-2026-124194
  6. SecurityWeekExploited Outlook Zero-Day Among 1,094 Flaws Patched by MicrosoftCVE-2026-124194

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