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Beveilingsadvies; NCSC-2026-0053 [1.0.0]
- Beveiligingsadvies
- NCSC-2026-0053 [1.0.0]
- Publicatie
- 10-02-2026 20:01 (Europe/Amsterdam)
- Prioriteit
- Normaal
- Betreft
- Kwetsbaarheden verholpen in Microsoft Windows
Kenmerken
- Improper Input Validation
- Improper Link Resolution Before File Access ('Link Following')
- External Control of File Name or Path
- Improper Neutralization of Special Elements used in a Command ('Command Injection')
- Heap-based Buffer Overflow
- Out-of-bounds Read
- Buffer Over-read
- Improper Privilege Management
- Improper Access Control
- Improper Authentication
- Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
- Time-of-check Time-of-use (TOCTOU) Race Condition
- Use After Free
- Untrusted Search Path
- NULL Pointer Dereference
- Insertion of Sensitive Information into Log File
- Protection Mechanism Failure
- Out-of-bounds Write
- Untrusted Pointer Dereference
- Access of Resource Using Incompatible Type ('Type Confusion')
Omschrijving
Microsoft heeft kwetsbaarheden verholpen in Windows.
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:
https://portal.msrc.microsoft.com/en-us/security-guidance
CVE's
- CVE-2026-21519 - CVSS (v3) 7.8
- CVE-2026-21246 - CVSS (v3) 7.8
- CVE-2026-21235 - CVSS (v3) 7.3
- CVE-2026-21234 - CVSS (v3) 7.0
- CVE-2026-21236 - CVSS (v3) 7.8
- CVE-2026-21533 - CVSS (v3) 7.8
- CVE-2026-21513 - CVSS (v3) 8.8
- CVE-2026-21510 - CVSS (v3) 8.8
- CVE-2026-21525 - CVSS (v3) 6.2
- CVE-2026-21508 - CVSS (v3) 7.0
- CVE-2026-21253 - CVSS (v3) 7.0
- CVE-2026-21249 - CVSS (v3) 3.3
- CVE-2026-21240 - CVSS (v3) 7.8
- CVE-2026-21239 - CVSS (v3) 7.8
- CVE-2026-21238 - CVSS (v3) 7.8
- CVE-2026-21231 - CVSS (v3) 7.8
- CVE-2026-21222 - CVSS (v3) 5.5
- CVE-2026-20846 - CVSS (v3) 7.5
- CVE-2026-21248 - CVSS (v3) 7.3
- CVE-2026-21247 - CVSS (v3) 7.3
- CVE-2026-21255 - CVSS (v3) 8.8
- CVE-2026-21244 - CVSS (v3) 7.3
- CVE-2026-21251 - CVSS (v3) 7.8
- CVE-2026-21243 - CVSS (v3) 7.5
- CVE-2026-21242 - CVSS (v3) 7.0
- CVE-2026-21241 - CVSS (v3) 7.0
- CVE-2026-21237 - CVSS (v3) 7.0
- CVE-2026-21250 - CVSS (v3) 7.8
- CVE-2026-21245 - CVSS (v3) 7.8
- CVE-2026-21232 - CVSS (v3) 7.8
- CVE-2023-2804 - CVSS (v3) 6.5
- CVE-2026-21517 - CVSS (v3) 7.0
- CVE-2026-20841 - CVSS (v3) 8.8
Producten
Microsoft
Windows 10 1607
Windows 10 1809
Windows 10 21h2
Windows 10 22h2
Windows 10 Version 1607
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1809
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 21H2
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 22H2
Windows 10 Version 22H2 for 32-bit Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows 10 Version 22H2 for x64-based Systems
Windows 11 23H2
Windows 11 Version 23H2
Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 23H2 for x64-based Systems
Windows 11 Version 24H2
Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows 11 Version 25H2
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems
Windows 11 Version 26H1
Windows 11 Version 26H1 for ARM64-based Systems
Windows 11 version 22H3
Windows 11 version 26H1
Windows 11 version 26H1 for x64-based Systems
Windows App for Mac
Windows Notepad
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)
Windows Server 2016
Windows Server 2016 (Server Core installation)
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2022, 23H2 Edition (Server Core installation)
Windows Server 2025
Windows Server 2025 (Server Core installation)
Disclaimer
The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.