Windows State Repository Service: Tampering through weak authentication
Summary
The Windows State Repository Service contains weak authentication. An authorized local user with low privileges can tamper with data managed by the service. No user interaction is required, the impact is limited to integrity, and the CVSS score is 5.5 (Medium). NVD analysis was still pending at the time of publication.
Affected
- Windows 10 Version 1607 (10.0.14393.0 to < 10.0.14393.9688)
- Windows 10 Version 1809 (10.0.17763.0 to < 10.0.17763.9487)
- Windows 10 Version 21H2 (10.0.19044.0 to < 10.0.19044.7846)
- Windows 10 Version 22H2 (10.0.19045.0 to < 10.0.19045.7846)
- Windows 11 Version 23H2 (10.0.22631.0 to < 10.0.22631.7711)
- Windows 11 Version 24H2 (10.0.26100.0 to < 10.0.26100.9974)
- Windows 11 Version 25H2 (10.0.26200.0 to < 10.0.26200.9974)
- Windows 11 Version 26H1 (10.0.28000.0 to < 10.0.28000.3501)
- Windows 11 Version 26H2 (10.0.26300.0 to < 10.0.26300.9974)
- Windows Server 2016, including Server Core (10.0.14393.0 to < 10.0.14393.9688)
- Windows Server 2019, including Server Core (10.0.17763.0 to < 10.0.17763.9487)
- Windows Server 2022 (10.0.20348.0 to < 10.0.20348.5870)
Fixed in
Fixed in Microsoft's November 2026 security updates. Install the build listed as the upper limit for each affected product or a later build. KB numbers per product: check the MSRC advisory, as they were not verified.
Workaround
Unknown.
Exploitation
- Not known to be exploited in the wild.
- Microsoft's SSVC assessment: exploitation none, not automatable, partial technical impact.
- Rapid7 rates exploitation as less likely.
Our recommendation
- Install the November 2026 cumulative update on all affected Windows systems.
- Prioritise shared workstations, RDS/terminal servers and Windows 10 systems on Extended Security Updates.
- Check the MSRC advisory for the KB number of each product.
- Handle this as a normal monthly patch, since it is a local flaw with medium severity.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Tampering – Windows State Repository Service
- 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
- Microsoft Security Response Center: CVE-2026-112979 msrc.microsoft.com
- CVE Record CVE-2026-112979 www.cve.org
- BleepingComputer: Microsoft November 2026 Patch Tuesday www.bleepingcomputer.com
- Rapid7: Patch Tuesday November 2026 www.rapid7.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 11 Nov 2026, 16:51.
Original description (NVD)
Weak authentication in Windows State Repository Service allows an authorized attacker to perform tampering 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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