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-2026-69383High· 7.0External control of file name or path in Windows Shell allows an authorized attacker to elevate privileges locally.
External control of file name or path in Windows Shell allows an authorized attacker to elevate privileges locally.
CVE-2026-69382Medium· 5.9Use of a broken or risky cryptographic algorithm in Microsoft Exchange Server allows an unauthorized attacker to disclose information over a network.
Use of a broken or risky cryptographic algorithm in Microsoft Exchange Server allows an unauthorized attacker to disclose information over a network.
CVE-2026-69381Medium· 4.6Out-of-bounds read in Windows Storage Port Driver allows an unauthorized attacker to disclose information with a physical attack.
Out-of-bounds read in Windows Storage Port Driver allows an unauthorized attacker to disclose information with a physical attack.
CVE-2026-69380High· 8.1Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Missing authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-69379High· 7.0Improper link resolution before file access ('link following') in Windows NTFS allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-69378High· 7.5Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.
Uncontrolled recursion in Microsoft Exchange Server allows an unauthorized attacker to deny service over a network.
CVE-2026-69377High· 7.8Missing authorization in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.
Missing authorization in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.
CVE-2026-69376Medium· 5.5Out-of-bounds read in Microsoft Standard XPS allows an authorized attacker to disclose information locally.
Out-of-bounds read in Microsoft Standard XPS allows an authorized attacker to disclose information locally.
CVE-2026-69375Medium· 6.5Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.
Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.
CVE-2026-69374Medium· 6.5Allocation of resources without limits or throttling in Windows SMB Server allows an authorized attacker to deny service over a network.
Allocation of resources without limits or throttling in Windows SMB Server allows an authorized attacker to deny service over a network.
CVE-2026-69373Medium· 6.7Integer overflow or wraparound in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.
Integer overflow or wraparound in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.
CVE-2026-69372Medium· 5.7Out-of-bounds read in Windows Network File System allows an authorized attacker to deny service over a network.
Out-of-bounds read in Windows Network File System allows an authorized attacker to deny service over a network.
CVE-2026-69371High· 8.0Heap-based buffer overflow in Windows Overlay Filter allows an authorized attacker to elevate privileges over a network.
Heap-based buffer overflow in Windows Overlay Filter allows an authorized attacker to elevate privileges over a network.
CVE-2026-69369Medium· 5.5Out-of-bounds read in Windows DNS allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows DNS allows an authorized attacker to disclose information locally.
CVE-2026-69368High· 7.8Heap-based buffer overflow in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Overlay Filter allows an authorized attacker to elevate privileges locally.
CVE-2026-69367Medium· 5.5Out-of-bounds read in Microsoft Standard XPS allows an authorized attacker to disclose information locally.
Out-of-bounds read in Microsoft Standard XPS allows an authorized attacker to disclose information locally.
CVE-2026-69366High· 7.1Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.
Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.
CVE-2026-69365High· 8.0Out-of-bounds read in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges over a network.
Out-of-bounds read in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges over a network.
CVE-2026-69364High· 7.1Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to elevate privileges over a network.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to elevate privileges over a network.
CVE-2026-69362High· 7.0Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Use after free in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
CVE-2026-69361Medium· 6.5Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to perform spoofing over a network.
CVE-2026-69360High· 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-2026-69359High· 7.8Heap-based buffer overflow in Active Directory Domain Services allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Active Directory Domain Services allows an authorized attacker to elevate privileges locally.
CVE-2026-69358High· 7.1Use of uninitialized resource in Remote Desktop Client allows an authorized attacker to execute code over a network.
Use of uninitialized resource in Remote Desktop Client allows an authorized attacker to execute code over a network.
CVE-2026-69357High· 7.1Use after free in Windows NDIS allows an authorized attacker to elevate privileges over a network.
Use after free in Windows NDIS allows an authorized attacker to elevate privileges over a network.
CVE-2026-69356Critical· 9.3Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-69355High· 8.8External control of file name or path in Microsoft Exchange Server allows an authorized attacker to execute code over a network.
External control of file name or path in Microsoft Exchange Server allows an authorized attacker to execute code over a network.
CVE-2026-69353Medium· 5.5Out-of-bounds read in Windows Text Shaping allows an authorized attacker to disclose information locally.
Out-of-bounds read in Windows Text Shaping allows an authorized attacker to disclose information locally.
CVE-2026-69352High· 7.8Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
CVE-2026-69351Medium· 5.5Exposure of private personal information to an unauthorized actor in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to disclose information locally.
Exposure of private personal information to an unauthorized actor in Windows Universal Plug and Play (UPnP) Device Host allows an authorized attacker to disclose information locally.