CVE-2026-33096
HighCVSS 7.5Exploitation Probability (EPSS)
Elevated risk66th percentile - higher than 66% of all known CVEs
Summary
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.
Risk Assessment
An attacker can remotely cause HTTP services on a Windows server to crash, leading to disruption of web applications.
Recommendation
Apply the security update from Microsoft that addresses this vulnerability, or temporarily disable unnecessary HTTP.sys features.
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-2026-62811High
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-2026-62739High
Heap-based buffer overflow 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-2026-20929High
Improper access control in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.
Original NVD description (English source)
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.