Microsoft Released September 2026 Software Updates
Microsoft has released software updates as part of its September 2026 Patch Tuesday. The updates fix 966 security vulnerabilities in total, including 2 actively exploited zero-day vulnerabilities.
The breakdown of the vulnerabilities are as follows:
438 elevation of privilege
258 remote code execution
173 information disclosure
16 spoofing
56 denial of service
19 security feature bypass
The actively exploited zero-days are as follows:
CVE-2026-81963 - vulnerability in Windows Update Stack that can lead to elevation of privilege
CVE-2026-85880 - vulnerability in Windows Advanced Local Procedure Call that can lead to elevation of privilege
Why You Should Care?
These vulnerabilities are flaws that have been identified in Microsoft software, and now that they are publicly known, attackers will try to exploit as many targets as possible before users apply the fix. This makes it extra dangerous, and needs to be addressed as soon as possible.
In this case, two zero-day vulnerabilities are being actively exploited, which means it is only a matter of time before the attackers compromise your business. Now that patches are available, it is critical to apply the patches as soon as possible to avoid getting compromised.
What Should You Do?
Test the patches ASAP at your organization, and make sure it does not break any business applications
Prioritize the three zero-day vulnerabilities
Roll out the rest of the Patch Tuesday updates