Vulnerability Monitor

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CVE-2026-20847

Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to perform spoofing over a network.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 14 products from microsoft, from microsoft, from microsoft and 11 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2026-01-13T18:16:13.140

Last Modified

2026-01-15T14:05:56.750

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-200
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System microsoft windows_10_1607 < 10.0.14393.8783 Yes
Operating System microsoft windows_10_1607 < 10.0.14393.8783 Yes
Operating System microsoft windows_10_1809 < 10.0.17763.8276 Yes
Operating System microsoft windows_10_1809 < 10.0.17763.8276 Yes
Operating System microsoft windows_10_21h2 < 10.0.19044.6809 Yes
Operating System microsoft windows_10_22h2 < 10.0.19045.6809 Yes
Operating System microsoft windows_11_23h2 < 10.0.22631.6491 Yes
Operating System microsoft windows_11_24h2 < 10.0.26100.7623 Yes
Operating System microsoft windows_11_25h2 < 10.0.26200.7623 Yes
Operating System microsoft windows_server_2008 r2 Yes
Operating System microsoft windows_server_2012 - Yes
Operating System microsoft windows_server_2012 r2 Yes
Operating System microsoft windows_server_2016 < 10.0.14393.8783 Yes
Operating System microsoft windows_server_2019 < 10.0.17763.8276 Yes
Operating System microsoft windows_server_2022 < 10.0.20348.4648 Yes
Operating System microsoft windows_server_2022_23h2 < 10.0.25398.2092 Yes
Operating System microsoft windows_server_2025 < 10.0.26100.32230 Yes
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For microsoft's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.