CVE-2026-21250
Windows HTTP.sys Elevation of Privilege Vulnerability
CVSS v3
7.8
HIGH
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
none
SSVC status
Description
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
Technical details
- Published
- 2026-02-10
- Last Modified
- 2026-02-11
- Exploit-DB
- EDB-52546
Frequently asked questions
What is CVE-2026-21250?
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
Is CVE-2026-21250 actively exploited?
Active exploitation of CVE-2026-21250 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-21250?
CVE-2026-21250 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2026-21250 affecting your environment?
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