Microsoft Windows: Integer overflow in Overlay Filter allows privilege escalation
Summary
An integer overflow (CWE-190) in the Windows Overlay Filter component allows a local attacker to elevate privileges to a higher level. The attacker needs local access and no privileges, but user interaction is required, for example opening a malicious file or running a program. The vendor record rates the impact on confidentiality, integrity and availability as high (CVSS 3.1: 7.8).
Affected
- Windows 10 Version 1607 (10.0.14393.0 to before 10.0.14393.9688)
- Windows 10 Version 1809 (10.0.17763.0 to before 10.0.17763.9487)
- Windows 10 Version 21H2 (10.0.19044.0 to before 10.0.19044.7846)
- Windows 10 Version 22H2 (10.0.19045.0; upper build limit not confirmed, see MSRC)
- Windows 11 Version 23H2 (10.0.22631.0 to before 10.0.22631.7711)
- Windows 11 Version 24H2 (10.0.26100.0 to before 10.0.26100.9974)
- Windows 11 Version 25H2 (10.0.26200.0 to before 10.0.26200.9974)
- Windows 11 Version 26H1 (10.0.28000.0 to before 10.0.28000.3501)
- Windows 11 Version 26H2 (10.0.26300.0 to before 10.0.26300.9974)
- Windows Server 2016 incl. Server Core (10.0.14393.0 to before 10.0.14393.9688)
- Windows Server 2019 incl. Server Core (10.0.17763.0 to before 10.0.17763.9487)
- Windows Server 2022 (10.0.20348.0 to before 10.0.20348.5870)
Fixed in
- Windows 10 1607 / Server 2016: build 10.0.14393.9688
- Windows 10 1809 / Server 2019: build 10.0.17763.9487
- Windows 10 21H2: build 10.0.19044.7846
- Windows 11 23H2: build 10.0.22631.7711
- Windows 11 24H2 / 25H2 / 26H2: build 10.0.26100.9974 / 10.0.26200.9974 / 10.0.26300.9974
- Windows 11 26H1: build 10.0.28000.3501
- Windows Server 2022: build 10.0.20348.5870
- Windows 10 22H2: Unknown, check MSRC
Workaround
Unknown. No vendor workaround has been identified. Installing the fixed build is the practical remediation.
Exploitation
- No public proof-of-concept found at publication.
- No exploitation in the wild reported at publication.
- CISA SSVC: exploitation none, automatable no, technical impact total.
- CISA KEV status not checked.
Our recommendation
- Install the November 2026 cumulative security update on all affected Windows systems and check the fixed build numbers in the MSRC advisory.
- Prioritise Windows 10 1607, 1809 and 21H2 and Windows Server 2016 and 2019, and inventory any systems still running these releases.
- Limit local logon and restrict untrusted files and programs, as this flaw is typically used after an initial compromise.
- Monitor for public proof-of-concept code or exploitation reports and raise the priority if they appear.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows Overlay Filter
- 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 Update Guide: CVE-2026-112760 msrc.microsoft.com
- CVE Record: CVE-2026-112760 www.cve.org
- Microsoft Security Update Guide: CVE-2026-69957 (related Overlay Filter issue) msrc.microsoft.com
- Vulners: MS:CVE-2026-69957 vulners.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, 04:18.
Original description (NVD)
Integer overflow or wraparound in Windows Overlay Filter allows an unauthorized attacker to elevate privileges 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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