ZDI-CAN-31294: ZDI-26-536: (Pwn2Own) Microsoft Windows http.sys Integer Overflow Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-62735.
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-31294?
The severity of ZDI-CAN-31294 is rated at 8.8 according to the CVSS scoring.
How do I fix ZDI-CAN-31294?
To fix ZDI-CAN-31294, apply the latest security patches provided by Microsoft for the HTTP.sys component.
What is ZDI-CAN-31294?
ZDI-CAN-31294 is a local privilege escalation vulnerability in Microsoft Windows that allows attackers to escalate privileges on affected installations.
Who is vulnerable to ZDI-CAN-31294?
Any user running an affected installation of Microsoft Windows with HTTP.sys is potentially vulnerable to ZDI-CAN-31294.
What are the prerequisites for exploiting ZDI-CAN-31294?
An attacker must first obtain the ability to execute low-privileged code on the target system to exploit ZDI-CAN-31294.