CVE-2026-26128

CWE-287 — Improper Authentication5 documents5 sources
Severity
7.8HIGH
EPSS
0.1%
top 83.61%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
29
Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809Microsoft Windows 10 Version 21h2+26 more
Timeline
PublishedMar 10

Description

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

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages29 packages

▶CVEListV5microsoft/windows_server_20126.2.9200.0 — 6.2.9200.25973
▶CVEListV5microsoft/windows_server_201610.0.14393.0 — 10.0.14393.8957
▶CVEListV5microsoft/windows_server_201910.0.17763.0 — 10.0.17763.8511
▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.4893
▶CVEListV5microsoft/windows_server_202510.0.26100.0 — 10.0.26100.32522

🔴Vulnerability Details

2
CVEList
Windows SMB Server Elevation of Privilege Vulnerability↗2026-03-10
▶
GHSA
GHSA-x7g8-668h-5f2w: Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally↗2026-03-10
▶

📋Vendor Advisories

1
Microsoft
Windows SMB Server Elevation of Privilege Vulnerability↗2026-03-10
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-26128 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-26128 (HIGH CVSS 7.8) | Improper authentication in Windows | cvebase.io