PT-2026-7354 · Microsoft · Windows Http.Sys+1

Matthew Cox · Published 2026-02-10 · Updated 2026-02-10 · CVE-2026-21250

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows HTTP.sys (affected versions not specified)

Description An issue exists in Windows HTTP.sys where an untrusted pointer dereference can lead to local privilege escalation. An authorized attacker can exploit this to gain elevated privileges on a system.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Untrusted Pointer Dereference

Weakness Enumeration

CWE-822

Related Identifiers

BDU:2026-01805

CVE-2026-21250

Affected Products

Windows

Windows Http.Sys

References · 6

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-21250 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21250 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-21250 · Security Note
• https://osv.dev/vulnerability/CVE-2026-21250 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01805 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21250 · Vendor Advisory