Summary
Microsoft heeft kwetsbaarheden verholpen in Windows.
Details
Interpretaties
Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de volgende categorieën schade:
- Denial-of-Service (DoS)
- Manipulatie van gegevens
- Toegang tot gevoelige gegevens
- Uitvoeren van willekeurige code (gebruikersrechten)
- Verkrijgen van verhoogde rechten
- Omzeilen van een beveiligingsmaatregel
- Spoofing
```
Desktop Window Manager:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21519 | 7.80 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Mailslot File System:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21253 | 7.00 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Windows LDAP - Lightweight Directory Access Protocol:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21243 | 7.50 | Denial-of-Service |
|----------------|------|-------------------------------------|
Windows Kernel:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21245 | 7.80 | Verkrijgen van verhoogde rechten |
| CVE-2026-21239 | 7.80 | Verkrijgen van verhoogde rechten |
| CVE-2026-21231 | 7.80 | Verkrijgen van verhoogde rechten |
| CVE-2026-21222 | 5.50 | Toegang tot gevoelige gegevens |
|----------------|------|-------------------------------------|
Windows Remote Desktop:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21533 | 7.80 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Windows Remote Access Connection Manager:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21525 | 6.20 | Denial-of-Service |
|----------------|------|-------------------------------------|
Windows Shell:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21510 | 8.80 | Omzeilen van beveiligingsmaatregel |
|----------------|------|-------------------------------------|
Role: Windows Hyper-V:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21248 | 7.30 | Uitvoeren van willekeurige code |
| CVE-2026-21247 | 7.30 | Uitvoeren van willekeurige code |
| CVE-2026-21255 | 8.80 | Omzeilen van beveiligingsmaatregel |
| CVE-2026-21244 | 7.30 | Uitvoeren van willekeurige code |
|----------------|------|-------------------------------------|
Windows Win32K - GRFX:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2023-2804 | 6.50 | Uitvoeren van willekeurige code |
|----------------|------|-------------------------------------|
Windows Cluster Client Failover:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21251 | 7.80 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Windows HTTP.sys:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21250 | 7.80 | Verkrijgen van verhoogde rechten |
| CVE-2026-21240 | 7.80 | Verkrijgen van verhoogde rechten |
| CVE-2026-21232 | 7.80 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Windows Connected Devices Platform Service:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21234 | 7.00 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Windows GDI+:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-20846 | 7.50 | Denial-of-Service |
|----------------|------|-------------------------------------|
Windows App for Mac:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21517 | 7.00 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Windows NTLM:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21249 | 3.30 | Voordoen als andere gebruiker |
|----------------|------|-------------------------------------|
Windows Ancillary Function Driver for WinSock:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21236 | 7.80 | Verkrijgen van verhoogde rechten |
| CVE-2026-21241 | 7.00 | Verkrijgen van verhoogde rechten |
| CVE-2026-21238 | 7.80 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Internet Explorer:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21513 | 8.80 | Omzeilen van beveiligingsmaatregel |
|----------------|------|-------------------------------------|
Windows Storage:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21508 | 7.00 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Windows Subsystem for Linux:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21242 | 7.00 | Verkrijgen van verhoogde rechten |
| CVE-2026-21237 | 7.00 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
Microsoft Graphics Component:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-21246 | 7.80 | Verkrijgen van verhoogde rechten |
| CVE-2026-21235 | 7.30 | Verkrijgen van verhoogde rechten |
|----------------|------|-------------------------------------|
```
Oplossingen
Microsoft heeft updates beschikbaar gesteld waarmee de beschreven kwetsbaarheden worden verholpen. We raden u aan om deze updates te installeren. Meer informatie over de kwetsbaarheden, de installatie van de updates en eventuele work-arounds vindt u op:
Vulnerabilities 33
-
High 8.8
Windows Shell Security Feature Bypass Vulnerability
Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
KEV Feb 10, 2026 -
High 8.8
MSHTML Framework Security Feature Bypass Vulnerability
Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network.
KEV Feb 10, 2026 -
High 7.8CVE-2026-21519 Exploited
Desktop Window Manager Elevation of Privilege Vulnerability
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
KEV Feb 10, 2026 -
High 7.8
Windows Remote Desktop Services Elevation of Privilege Vulnerability
Improper privilege management in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.
KEV Feb 10, 2026 -
Medium 6.2CVE-2026-21525 Exploited
Windows Remote Access Connection Manager Denial of Service Vulnerability
Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.
KEV Feb 10, 2026 -
High 8.8
Windows Hyper-V Security Feature Bypass Vulnerability
Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally.
-
High 7.8CVE-2026-20841 Public exploit
Windows Notepad App Remote Code Execution Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.
-
High 7.8
Windows Kernel Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.
-
High 7.8
Windows HTTP.sys Elevation of Privilege Vulnerability
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
-
High 7.8
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
-
High 7.8
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
-
High 7.8
Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
-
High 7.8
Windows HTTP.sys Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
-
High 7.8
Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
-
High 7.8
Windows Graphics Component Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
-
High 7.8CVE-2026-21250 Public exploit
Windows HTTP.sys Elevation of Privilege Vulnerability
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
-
High 7.8
Cluster Client Failover (CCF) Elevation of Privilege Vulnerability
Use after free in Windows Cluster Client Failover allows an authorized attacker to elevate privileges locally.
-
High 7.5
GDI+ Denial of Service Vulnerability
Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network.
-
High 7.5
Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability
Null pointer dereference in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.
-
High 7.3
Windows Graphics Component Elevation of Privilege Vulnerability
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
-
High 7.3CVE-2026-21244 Public exploit
Windows Hyper-V Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
-
High 7.3
Windows Hyper-V Remote Code Execution Vulnerability
Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.
-
High 7.3CVE-2026-21248 Public exploit
Windows Hyper-V Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
-
High 7.0
Windows Connected Devices Platform Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.
-
High 7.0
Windows Subsystem for Linux Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
-
High 7.0
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
-
High 7.0
Windows Subsystem for Linux Elevation of Privilege Vulnerability
Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
-
High 7.0
Mailslot File System Elevation of Privilege Vulnerability
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
-
High 7.0CVE-2026-21508 Public exploit
Windows Storage Elevation of Privilege Vulnerability
Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally.
-
Medium 6.5
A heap-based buffer overflow issue was discovered in libjpeg-turbo in h2v2_merged_upsample_internal() function of jdmrg…
-
Medium 5.5
Windows Kernel Information Disclosure Vulnerability
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
-
Medium 4.7
Windows App for Mac Installer Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows App for Mac allows an authorized attacker to elevate privileges locally.
-
Low 3.3CVE-2026-21249 EPSS 11%
Windows NTLM Spoofing Vulnerability
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally.
Revision history
-
#1.0.0
Initiele versie