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-2026-55012High· 7.8Microsoft Defender Remote Code Execution Vulnerability
Integer overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.
CVE-2026-55011High· 7.8Microsoft Defender Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.
CVE-2026-55009High· 7.8Microsoft Exchange Server Elevation of Privilege Vulnerability
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.
CVE-2026-55008Critical· 9.6Microsoft Exchange Server Spoofing Vulnerability
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-2026-55006High· 7.8Microsoft Exchange Server Elevation of Privilege Vulnerability
Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.
CVE-2026-55005High· 8.8Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.
CVE-2026-55003Medium· 6.5Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVE-2026-55002High· 8.8Microsoft SQL Server Elevation of Privilege Vulnerability
External control of file name or path in SQL Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-54999High· 8.8Windows TCP/IP Remote Code Execution Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over an adjacent network.
CVE-2026-54997Medium· 5.5Windows SMB Information Disclosure Vulnerability
Use of uninitialized resource in Windows SMB allows an authorized attacker to disclose information locally.
CVE-2026-54996High· 7.0Windows USB Print Driver Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows USB Print Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-54995High· 8.1Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.
CVE-2026-54988Medium· 6.1Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVE-2026-54122High· 8.4Windows GDI+ Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.
CVE-2026-54119High· 7.5Windows Active Directory Denial of Service Vulnerability
Loop with unreachable exit condition ('infinite loop') in Windows Active Directory allows an unauthorized attacker to deny service over a network.
CVE-2026-54118Critical· 9.8Microsoft SQL Server Remote Code Execution Vulnerability
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
CVE-2026-54117Critical· 9.8Microsoft SQL Server Remote Code Execution Vulnerability
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
CVE-2026-54114High· 7.8Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVE-2026-54108Medium· 6.5Microsoft SharePoint Server Spoofing Vulnerability
External control of file name or path in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVE-2026-50675High· 7.8Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVE-2026-50520High· 8.4Visual Studio Code Remote Code Execution Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Visual Studio Code allows an unauthorized attacker to execute code locally.
CVE-2026-50338High· 8.2PoCAzure Spring Apps Elevation of Privilege Vulnerability
Improper authentication in Azure Spring Apps allows an authorized attacker to elevate privileges over a network.
CVE-2026-57979Medium· 6.5Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVE-2026-57976Medium· 6.5Windows Active Directory Domain Services Denial of Service Vulnerability
Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.
CVE-2026-57969High· 8.8Azure CycleCloud Elevation of Privilege Vulnerability
Missing authentication for critical function in Azure CycleCloud allows an authorized attacker to elevate privileges over a network.
CVE-2026-57107High· 7.8Windows Admin Center Elevation of Privilege Vulnerability
Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges locally.
CVE-2026-57097Medium· 6.4Microsoft XML Security Feature Bypass Vulnerability
Untrusted search path in Microsoft XML allows an unauthorized attacker to bypass a security feature with a physical attack.
CVE-2026-56193High· 7.1Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
CVE-2026-56185Medium· 6.5Windows Admin Center Information Disclosure Vulnerability
Improper authentication in Windows Admin Center allows an authorized attacker to disclose information over a network.
CVE-2026-56169High· 8.1Windows Admin Center Elevation of Privilege Vulnerability
Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network.