CVE-2026-47291
CRITICAL severity · CVSS 9.8 · CWE-122
9.8CVSS CRITICAL
Summary
Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)22%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (4)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.