Microsoft Addresses 973 Vulnerabilities in September Security Update
Microsoft released its September monthly security updates on September 8, 2026, addressing a total of 973 vulnerabilities tracked under CVE identifiers. The company also resolved four additional flaws affecting third-party software.
The update was published on the second Tuesday of the month, known as Patch Tuesday. It covers a wide range of products including Windows, Office, SQL Server, Azure, Microsoft Dynamics, SharePoint Server, and multiple development tools.
Impact analysis shows 258 vulnerabilities permit remote code execution, while 438 allow privilege escalation. Additional categories include 173 information disclosure issues, 56 denial-of-service flaws, 19 security feature bypass problems, 16 spoofing vulnerabilities, and 13 memory-related weaknesses.
Severity distribution indicates 113 vulnerabilities rated Critical, exceeding the 100 mark, with the remaining 860 classified as Important. Some of the patched flaws have already been confirmed as actively exploited in the wild.
Related articles
Asset and Vulnerability Management in Practice: Building a Working Process with MaxPatrol VM and NetBox
This detailed guide explains how organizations can implement effective asset and vulnerability management by focusing on reliable infrastructure data, IT collaboration, and automation. It draws from real-world projects using MaxPatrol VM, NetBox, and 1C:ERP to demonstrate dynamic grouping, webhook-driven asset onboarding, and deviation-based control. The approach emphasizes eight core principles including minimizing human dependency, just-in-time awareness, maximum data accuracy, and embedding security into existing IT workflows. Technical flows cover automatic scanning initiation upon asset creation in NetBox, categorization against unacceptable events, and priority-based patching cycles aligned with Patch Tuesday. Self-control mechanisms and PDQL queries enable ongoing validation of subnets, asset freshness, and compliance without excessive manual oversight. The framework is designed to be adaptable to any mature vulnerability management platform beyond the specific tools demonstrated.
Google Releases Chrome 153 Fixing 230 Vulnerabilities Including Zero-Day Exploit
Google has released Chrome 153 for Windows, macOS, and Linux, addressing a total of 230 security vulnerabilities. The update includes fixes for five critical-severity issues and one confirmed zero-day vulnerability already exploited in the wild. Among the critical flaws are use-after-free bugs in WebGL tracked as CVE-2026-87464 and CVE-2026-87488, an out-of-bounds write CVE-2026-87438, a buffer overflow CVE-2026-87527, and a use-after-free in the Cast component identified as CVE-2026-87628. A medium-severity out-of-bounds write in the V8 JavaScript engine, CVE-2026-87491, was reported on August 6, 2026 and has seen active exploitation. The company is rolling out the patches gradually over the coming days and weeks across all supported platforms.
Microsoft Releases Record 966 Patches in Largest Patch Tuesday Ever, Including Two Actively Exploited Zero-Days
Microsoft has issued its largest monthly security update to date, addressing 966 vulnerabilities across Windows and related products during the September Patch Tuesday. The release includes two zero-day flaws already exploited in real-world attacks: CVE-2026-81963 in the Windows Update stack and CVE-2026-85880 in the Windows ALPC mechanism, both enabling local privilege escalation to SYSTEM level. A total of 105 vulnerabilities received critical severity ratings, with the majority involving privilege escalation (438) and remote code execution (258). An additional 204 issues were fixed earlier in September across Azure, Entra ID, Edge, and other services. The surge in patched flaws coincides with Microsoft's deployment of an AI-assisted vulnerability discovery system. Previous months saw significantly lower volumes, with 570 fixes in July and 400 in August.
Adobe Issues Critical Security Updates for ColdFusion Fixing Nine CVEs Including Eval Injection Flaws
Adobe has released security updates for Adobe ColdFusion to address nine vulnerabilities, urging users to apply the patches immediately. The update coincides with Patch Tuesday on September 8, 2026, and covers issues such as Eval injection, SQL injection, cross-site scripting, and access control weaknesses. Six of the vulnerabilities are rated Critical, with the highest CVSS v3.1 base score reaching 9.9 for CVE-2026-48273. The remaining three vulnerabilities are classified as Important. Adobe ColdFusion users are advised to update without delay to mitigate risks of code injection and unauthorized access. The advisory also references related security issues in other products including Canva, BIG-IP, and Dell SCG.