CVE-2026-20929

CWE-284 — Improper Access Control1540 documents6 sources
Severity
7.5HIGH
EPSS
0.0%
top 86.51%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
26
Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809Microsoft Windows 10 Version 21h2+23 more
Timeline
PublishedJan 13

Description

Improper access control in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.6 | Impact: 5.9

Affected Packages25 packages

▶NVDmicrosoft/windows< 10.0.14393.8783+4
▶NVDmicrosoft/windows_10_1607< 10.0.14393.8783
▶NVDmicrosoft/windows_10_1809< 10.0.17763.8276
▶NVDmicrosoft/windows_10_21h2< 10.0.19044.6809
▶NVDmicrosoft/windows_10_22h2< 10.0.19045.6809

🔴Vulnerability Details

2
CVEList
Windows HTTP.sys Elevation of Privilege Vulnerability↗2026-01-13
▶
GHSA
GHSA-cjjj-mhw7-f4xr: Improper access control in Windows HTTP↗2026-01-13
▶

📋Vendor Advisories

1
Microsoft
Windows HTTP.sys Elevation of Privilege Vulnerability↗2026-01-13
▶

🕵️Threat Intelligence

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CVE-2026-20929 (HIGH CVSS 7.5) | Improper access control in Windows | cvebase.io