CVE-2026-62735
Windows HTTP.sys Elevation of Privilege Vulnerability
- Published
- Aug 11, 2026
- Updated
- Sep 16, 2026
- Assigning CNA
- microsoft
- Evidence observed
- Aug 31, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 40.2%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
Sources
2- CVE-2026-62735Exploit
Local privilege escalation exploit for Windows HTTP.sys integer overflow (CVE-2026-62735), demonstrating crash and full SYSTEM shell via nonpaged pool overflow. For authorized testing.
Proof-of-concept for CVE-2026-62735, an integer overflow in http.sys leading to heap overflow and SYSTEM shell. Includes crash log and stack trace analysis.
Responsible use
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