Identity theft vulnerability affecting Microsoft Windows
A vulnerability affecting Microsoft Windows would allow a malicious actor to access sensitive information on affected systems.
Description
Technical context and vulnerability details
Microsoft Windows is a family of operating systems developed and marketed by Microsoft. This system is affected by a vulnerability labeled CVE-2026-32202 resulting from a failure of protection mechanisms designed to prevent unauthorized actions on a network. Exploitation of this vulnerability would allow an unauthenticated malicious actor to impersonate a legitimate entity to submit falsified network requests, potentially leading to unauthorized access and manipulation of sensitive data within affected systems. It is classified as medium with a severity score of 4.3 according to CVSS V3.1.
Potential Risks & Impact
Potential consequences upon exploitation
- Data privacy breach;
- Data integrity breach;
- Compromise of system integrity;
Affected systems
Products, components and targeted versions
- Versions of Microsoft Windows that do not have the April 2026 security patches, i.e.:;
- Windows 10;
- Version 1607 (x86, x64): versions strictly before 10.0.14393.9060;
- Version 1809 (x86, x64): versions strictly before 10.0.17763.8644;
- Version 21H2 (x86, x64, ARM64): versions strictly prior to 10.0.19044.7184;
- Version 22H2 (x86, x64, ARM64): versions strictly prior to 10.0.19045.7184;
- Windows 11;
- Version 23H2 (x64, ARM64): versions strictly prior to 10.0.22631.6936;
- Version 24H2 (x64, ARM64): versions strictly prior to 10.0.26100.8246;
- Version 25H2 (x64, ARM64): versions strictly prior to 10.0.26200.8246;
- Version 26H1 (x64, ARM64): versions strictly prior to 10.0.28000.1836;
- Windows Server;
- Windows Server 2012 (Standard and R2): all versions;
- Windows Server 2016: versions strictly before 10.0.14393.9060;
- Windows Server 2019: versions strictly before 10.0.17763.8644;
- Windows Server 2022: versions strictly before 10.0.20348.5020;
- Windows Server 2022 (23H2): versions strictly before 10.0.25398.2274;
- Windows Server 2025: versions strictly before 10.0.26100.32690;
- Windows 10 version 21H2 (x86, x64, ARM64);
- Windows 10 version 22H2 (x86, x64, ARM64);
Recommended Remediations & Actions
Immediate actions and recommended mitigations
- Update Microsoft Windows to its latest stable version;
- Block outgoing SMB flows (TCP port 445) to external networks or the Internet at the firewall level;
Sources & External Links
Vendor security advisories and documentation
Advisory Specifications
CSIRT Emergency Response
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