CVE-2026-62739
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk15th percentile - higher than 15% of all known CVEs
Summary
Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker could exploit the buffer overflow to execute code with elevated privileges, risking full system compromise.
Recommendation
Apply the latest security patches for Windows.
Other vulnerabilities in Windows HTTP.sys
See all- CVE-2026-47291Critical
An integer overflow or wraparound vulnerability in Windows HTTP.sys allows an unauthorized attacker to execute code remotely over a network.
- CVE-2026-69597High
Use after free in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.
- CVE-2026-62811High
Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
- CVE-2026-62753High
Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
- CVE-2026-62741High
Integer underflow (wrap or wraparound) in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
- CVE-2026-62735High
Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
- CVE-2026-61937High
Integer overflow or wraparound in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
- CVE-2026-50420Medium
An out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.
- CVE-2026-49787High
Unrestricted resource allocation vulnerability in Windows HTTP.sys. An unauthorized attacker can remotely cause a denial of service.
- CVE-2026-33096High
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.
Original NVD description (English source)
Heap-based buffer overflow in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS