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CVE-2015-2546

HighPublished

Microsoft Win32k Memory Corruption Vulnerability

Published: Sep 9, 2015
Updated: Aug 14, 2026
Assigning CNA: microsoft
Evidence observed: Mar 15, 2022

Primary CVSS

8.2/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS probability estimate

10.1%

Moderate · next 30 days

Percentile: 95.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

The kernel-mode driver in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 allows local users to gain privileges via a crafted application, aka "Win32k Memory Corruption Elevation of Privilege Vulnerability," a different vulnerability than CVE-2015-2511, CVE-2015-2517, and CVE-2015-2518.

Sources

CVE-2015-2546-ExploitExploit
Proof-of-concept exploit for CVE-2015-2546, with accompanying research paper and blog detailing the vulnerability analysis and exploitation technique.

Responsible use

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