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Vulnerabilities

Vulnerability · CVE-2015-2546

Microsoft Win32k Memory Corruption Vulnerability

Published Sep 8, 2015 · catalog updated Aug 14, 2026 · Microsoft Win32k

Patch now

CVE-2015-2546 is in the CISA known-exploited catalog, due Apr 5, 2022. Confirm Microsoft Win32k against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.2
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
10.11%
Remediation
Remediation guidance
Affected products
cpe microsoft/windows 10 1507 · cpe microsoft/windows 7 · cpe microsoft/windows 8 · cpe microsoft/windows 8.1 · cpe microsoft/windows rt · cpe microsoft/windows rt 8.1

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/windows 10 1507version unspecified
  • cpe microsoft/windows 7version unspecified
  • cpe microsoft/windows 8version unspecified
  • cpe microsoft/windows 8.1version unspecified
  • cpe microsoft/windows rtversion unspecified
  • cpe microsoft/windows rt 8.1version unspecified
  • cpe microsoft/windows server 2008r2
  • vendor Microsoft Win32kversion unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2015-2546

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2015-2546 is in the CISA known-exploited catalog, due Apr 5, 2022. Confirm Microsoft Win32k against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/windows server 2008 r2. Apply updates per vendor instructions.

What should an analyst verify?

CWE-119: Buffer Overflow. EPSS 10.11%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 8, 2015 · Catalog

    Detected

    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, an

  2. Mar 15, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 5, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Aug 13, 2026 · Catalog

    Updated

    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, an

  5. Aug 14, 2026 · CVE.org

    Updated

    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, an

Sources

  • CISA KEVConfirmed exploitationCVE-2015-2546

    The kernel-mode driver in Microsoft Windows OS and Server allows local users to gain privileges via a crafted application.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2015-2546

    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

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2015-2546

    30-day exploitation probability 10.1%

    first.org
  • NIST NVDVulnerability recordCVE-2015-2546

    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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2015-2546

    The kernel-mode driver in Microsoft Windows OS and Server allows local users to gain privileges via a crafted application.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.