Microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 932 in the 90 before. The busiest recent month was October 2026 with 1482. The median CVSS is 7.8 (high), with 273 rated critical. 2% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 112 days (95 cases). The dominant weakness classes are CWE-122 (931) and CWE-416 (851). Most affected products: windows_10_1607 (988), Windows 10 Version 1607 (877), 365_apps (267).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 2% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 112 d median(95)
- Last 90 days
- 2930 prev 932
Weakness classes
Products
- windows_10_1607 988
- Windows 10 Version 1607 877
- 365_apps 267
- Microsoft 365 Apps for Enterprise 232
- Windows 10 Version 1809 199
- windows_10_1809 174
Worst active — by depth score
CVE-2025-53770Critical· 9.8Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing…100CVE-2021-38647Critical· 9.8Open Management Infrastructure (OMI) Remote Code Execution Vulnerability100CVE-2021-34473Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2021-26855Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2020-0796Critical· 10.0A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.100
Microsoft vulnerabilities
CVEs affecting Microsoft, newest first. Open any entry for full detail, references, and exploit status.
4599 CVEsRSS
CVE-2026-80097High· 8.6PoCImproper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.
Improper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.
CVE-2026-80096High· 8.8Out-of-bounds read in Windows Remote Desktop Services allows an authorized attacker to elevate privileges over a network.
Out-of-bounds read in Windows Remote Desktop Services allows an authorized attacker to elevate privileges over a network.
CVE-2026-80093High· 7.0Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-80091Medium· 6.5Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVE-2026-80090Medium· 6.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-80089Medium· 6.5Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVE-2026-80088Medium· 6.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-80087Medium· 6.5Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVE-2026-80086Medium· 6.5Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
CVE-2026-80085High· 8.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
CVE-2026-80084Medium· 6.5Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
CVE-2026-80083High· 8.8Untrusted pointer dereference in Windows Hyper-V allows an authorized attacker to execute code locally.
Untrusted pointer dereference in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-80082Medium· 6.5Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVE-2026-80081High· 8.8Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
CVE-2026-80080High· 8.8Double free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Double free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
CVE-2026-80079Medium· 6.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-80078Medium· 6.5Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVE-2026-80077High· 8.8Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-80076Medium· 6.5Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVE-2026-80075High· 7.8Heap-based buffer overflow in Windows Work Folders allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Work Folders allows an authorized attacker to elevate privileges locally.
CVE-2026-80074High· 8.8Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-80073Medium· 6.5Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
CVE-2026-78526High· 8.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
CVE-2026-78525High· 8.8Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
CVE-2026-78524High· 8.8Out-of-bounds write in Microsoft Office allows an unauthorized attacker to execute code over a network.
Out-of-bounds write in Microsoft Office allows an unauthorized attacker to execute code over a network.
CVE-2026-78523Medium· 5.9Use after free in Windows DNS allows an unauthorized attacker to deny service over a network.
Use after free in Windows DNS allows an unauthorized attacker to deny service over a network.
CVE-2026-78522Medium· 6.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-78521High· 8.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
CVE-2026-78520Medium· 6.5Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
CVE-2026-78519High· 8.8Use of uninitialized resource in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Use of uninitialized resource in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.