ZDI-26-621: Microsoft Windows UMPDDrvRealizeBrush Improper Object Management Local Privilege Escalation Vulnerability
ZDI disclosed CVE-2026-62712, a CVSS 7.8 improper object management flaw in Windows UMPDDrvRealizeBrush enabling local privilege escalation after low-privileged code execution.
The Zero Day Initiative published ZDI-26-621 covering a local privilege escalation vulnerability in Microsoft Windows' UMPDDrvRealizeBrush component, caused by improper object management. An attacker must already be able to execute low-privileged code on the target system before exploiting the flaw. ZDI assigned the vulnerability a CVSS score of 7.8 and the CVE identifier CVE-2026-62712.
- ZDI-26-621 details an improper object management flaw in Windows UMPDDrvRealizeBrush
- Exploitation yields local privilege escalation on affected Windows installations
- Prior low-privileged code execution is a prerequisite for attack
- CVSS 7.8; tracked as CVE-2026-62712
- CVEs
- CVE-2026-62712
- Vendors
- MicrosoftZero Day Initiative
- Products
- Windows
- Organizations
- Zero Day Initiative
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-62712 | Heap Buffer Overflow in Windows Win32K Enables Local Privilege Escalation | 7.8 | <1% |
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 7.
zerodayinitiative.com
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