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15/08/2025
Zero-Day Initiative

ZDI-25-840: (Pwn2Own) Microsoft Windows 11 vhdmp Improper Validation of Array Index Local Privilege Escalation Vulnerability

by Deepanshu Jha
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-2025-53155.
  • Next ZDI-25-841: (Pwn2Own) Microsoft Windows 11 vhdmp Integer Overflow Local Privilege Escalation Vulnerability
  • Previous ZDI-25-839: Microsoft Teams Real Time Media Manager Integer Underflow Remote Code Execution Vulnerability

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