Microsoft Windows Text Services Framework: Information disclosure via uninitialized resource
Summary
A flaw in the Windows Text Services Framework, the core component behind text input services such as input method editors, allows use of an uninitialized resource. An authorized local attacker with a low-privileged account can read information from memory. Remote exploitation is not possible, and the attack complexity is high.
Affected
- Windows 10 Version 1809 and Windows Server 2019 (including Server Core): builds before 10.0.17763.9487
- Windows 10 Version 21H2: builds before 10.0.19044.7846
- Windows 10 Version 22H2: builds before 10.0.19045.7846 (third-party source, to be verified)
- Windows 11 Version 23H2: builds before 10.0.22631.7711
- Windows 11 Version 24H2: builds before 10.0.26100.9974
- Windows 11 Version 25H2: builds before 10.0.26200.9974
- Windows 11 Version 26H1: builds before 10.0.28000.3501
- Windows 11 Version 26H2: builds before 10.0.26300.9974
- Windows Server 2022: builds before 10.0.20348.5870
- Windows Server 2025 (including Server Core): builds before 10.0.26100.33822
Fixed in
- Install the November 2026 Microsoft security update for the affected Windows versions. Per a third-party summary, this is KB5131090 for Windows Server 2022; verify the KB numbers for all other versions on the MSRC advisory.
- Windows 10 KB number: Unknown.
Workaround
Unknown. No vendor-documented workaround was found.
Exploitation
- No evidence of exploitation in the wild found.
- No public proof-of-concept found.
- Not confirmed as listed in the CISA KEV catalogue.
- CISA SSVC: exploitation none, automatable no, technical impact partial.
Our recommendation
- Install the November 2026 cumulative update on all affected Windows systems as part of the normal patch cycle; verify KB numbers on the MSRC advisory.
- Prioritise shared and multi-user systems such as Remote Desktop/terminal servers and shared workstations.
- Check whether affected Windows 10 machines still receive security updates.
- Patch CVE-2026-119925 (local privilege elevation in the same component) in the same cycle.
- Monitor for updates to exploitation status.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Information disclosure – Windows Text Services Framework
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131085, KB5131090, KB5131096, KB5131080, KB5131077, KB5132061
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- MSRC Security Update Guide: CVE-2026-96022 msrc.microsoft.com
- CVE Record CVE-2026-96022 www.cve.org
- Strix: CVE-2026-96022 www.strix.ai
- Senserva: KB5131090 senserva.com
- Rapid7: Patch Tuesday November 2026 www.rapid7.com
- Strix: CVE-2026-119925 www.strix.ai
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 11 Nov 2026, 16:03.
Original description (NVD)
Use of uninitialized resource in Windows Text Services Framework allows an authorized attacker to disclose information locally.
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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