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ZDI-26-708: (0Day) Microsoft Windows HTTP Proxy Privilege Escalation Vulnerability

ZDI Published Advisories ()4
Part of a story covered by 11 sourcesZDI publishes ten advisories on 2026-09-16/17: six unpatched 0days (Airbyte, BusyBox, CrewAI, MindsDB, Windows HTTP Proxy) plus Cisco FMC, NoMachine, GIMP and Samsung rlottie flawsMerged summary & timeline
AI summary · glm-5.3-flashSummaries by Vani AI

ZDI disclosed an unpatched local privilege escalation flaw (CVSS 5.3) in Microsoft Windows HTTP Proxy, requiring prior low-privileged code execution.

ZDI-26-708 details a privilege escalation vulnerability in the Microsoft Windows HTTP Proxy component. A local attacker who can already execute low-privileged code on the target system can escalate privileges. ZDI assigned a CVSS rating of 5.3 and published it as a 0day advisory; no CVE id is listed in the bulletin text.

Key facts
  • Unpatched local privilege escalation in Windows HTTP Proxy
  • Requires existing low-privileged code execution
  • CVSS 5.3, no CVE listed in bulletin
  • Published as ZDI 0day advisory
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From the original article

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 5.

ZDI Published Advisories

zerodayinitiative.com

Read the full article at ZDI Published Advisories

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.