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Vulnerability record · CVE-2026-26128 · published 10 March 2026

CVE-2026-26128: Microsoft windows 10 1607 improper authentication vulnerability

Microsoft · Windows 10 1607

Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.

7.8 CVSS 3.1 High EPSS 0.37% · top 71.6% CWE-287 · Improper authentication
7.8CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26128 Vendor Advisory
https://www.vicarius.io/vsociety/posts/cve-2026-26128-detection-script-improper-authentication-in-windows-smb-server
https://www.vicarius.io/vsociety/posts/cve-2026-26128-mitigation-script-improper-authentication-in-windows-smb-server

Track CVE-2026-26128 inside VULONE

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-26128), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.