Microsoft has 4,598 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2929 in the last 90 days against 934 in the 90 before. The busiest recent month was October 2026 with 1482. The median CVSS is 7.8 (high), with 272 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
- 2929 prev 934
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.
4598 CVEsRSS
CVE-2026-88192Medium· 6.5Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-88191High· 7.8Improper link resolution before file access ('link following') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Improper link resolution before file access ('link following') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-88190Medium· 6.5Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-88189High· 7.8Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-88188High· 7.8Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-88186High· 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-2026-88185High· 8.1Heap-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-2026-88184Medium· 6.5Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-88183Medium· 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-2026-88182High· 7.8Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-88181High· 7.8Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-88180High· 7.8Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-88179High· 7.8Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-88178Critical· 9.8Use 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-2026-88177High· 7.8Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVE-2026-88175Medium· 6.5Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-88174High· 8.1Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
CVE-2026-88173High· 8.1Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized attacker to execute code over a network.
Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized attacker to execute code over a network.
CVE-2026-88172Medium· 6.5Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
CVE-2026-88171High· 8.1Double free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
Double free in Windows DHCP Server allows an unauthorized attacker to execute code over a network.
CVE-2026-88169Medium· 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-2026-88168High· 7.8Heap-based buffer overflow in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-88167Medium· 6.5Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVE-2026-88166High· 8.8Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVE-2026-88165High· 8.8Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.
Out-of-bounds write in Active Directory Domain Services allows an authorized attacker to execute code over a network.
CVE-2026-88163High· 8.8Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVE-2026-88162Medium· 5.5Improper authorization in Windows Encrypting File System (EFS) allows an authorized attacker to perform tampering locally.
Improper authorization in Windows Encrypting File System (EFS) allows an authorized attacker to perform tampering locally.
CVE-2026-88161High· 7.0Use after free in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.
Use after free in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.
CVE-2026-88160High· 7.0Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
CVE-2026-88159High· 8.8Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized attacker to execute code over a network.
Use after free in Windows Background Intelligent Transfer Service (BITS) allows an unauthorized attacker to execute code over a network.