Security
Microsoft security updates and public advisory evidence: affected products, fixing updates, exploitation and source coverage.
998Microsoft CVEsreleased Tue 8 Sep
132Critical105 need an update · 27 fixed service-side
2Exploited in the wild
0Publicly disclosed
2In CISA KEV
249Revised since release
Act first · September 2026
Exploited, KEV-listed, or publicly disclosedPatch next · critical, "exploitation more likely", or top 5% EPSS · needs an update154
Showing 3 of 154All critical
| CVE | Vulnerability | Severity | CVSS | EPSS | Impact | Status | Fixed by |
|---|---|---|---|---|---|---|---|
| CVE-2026-55946 | Microsoft Copilot Information Disclosure VulnerabilityMicrosoft Copilot | Critical | 6.1 | 0.4% | Information DisclosureNetwork | Revised 27 Oct | Service-side fix |