Windows Virtual Filtering Platform: Remote Code Execution (Use-after-Free)
Summary
Microsoft has published CVE-2026-95962, a use-after-free flaw (CWE-416) in the Windows Virtual Filtering Platform (VFP). According to the vulnerability description, an unauthorized attacker can execute code over a network. The CVSS 3.1 vector (9.0, critical) requires no privileges and no user interaction, but it assumes high attack complexity and a scope change. NVD analysis was still pending at publication.
Affected
- Windows 10 Version 1809 (builds below 10.0.17763.9487)
- Windows 10 Version 21H2 (builds below 10.0.19044.7846)
- Windows 10 Version 22H2 (builds below 10.0.19045.7846)
- Windows 11 Version 23H2 (builds below 10.0.22631.7711)
- Windows 11 Version 24H2 (builds below 10.0.26100.9974)
- Windows 11 Version 25H2 (builds below 10.0.26200.9974)
- Windows 11 Version 26H1 (builds below 10.0.28000.3501)
- Windows 11 Version 26H2 (builds below 10.0.26300.9974)
- Windows Server 2016 incl. Server Core (builds below 10.0.14393.9688)
- Windows Server 2019 incl. Server Core (builds below 10.0.17763.9487)
- Windows Server 2022 (builds below 10.0.20348.5870)
- Windows Server 2025 (builds below 10.0.26100.33822)
Fixed in
- The fixed builds are the first builds at or above the version ranges listed under affected, according to the CVE record.
- Install the current cumulative update for each affected version. The KB numbers are not included in the sources reviewed; take them from the MSRC page.
Workaround
Unknown.
Exploitation
No public proof of concept or evidence of exploitation was found at publication. The vulnerability was not found in the CISA KEV catalog entries reviewed. This status may change quickly.
Our recommendation
- Inventory all Windows 10, Windows 11 and Windows Server systems and compare their builds with the fixed builds listed above.
- Apply the security update for CVE-2026-95962 as a priority, starting with systems that are reachable from untrusted networks or that run Hyper-V.
- Check Windows 10 Version 1809 and Windows Server 2019 systems first, and confirm their support status and fix availability.
- Monitor the MSRC page, NVD and the CISA KEV catalog for updates to severity, exploitation status and mitigations.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Remote code execution – Windows Virtual Filtering Platform (VFP)
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131291, KB5131085, KB5131096, KB5131090, KB5131087, KB5132061
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Response Center: CVE-2026-95962 msrc.microsoft.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 10 Nov 2026, 20:48.
Original description (NVD)
Use after free in Windows Virtual Filtering Platform (VFP) allows an unauthorized attacker to execute code over a network.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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