CVE-2015-2546
Microsoft Win32k Memory Corruption Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 5 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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.
- CVSS 3.1
- 8.2 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 10.19% probability · 95th percentile
- CISA KEV
- Listed 15 March 2022 · due 5 April 2022 · used in ransomware campaigns
- Weakness
- CWE-119
- Affected
- microsoft/windows 10 1507 · microsoft/windows 7 · microsoft/windows 8 · microsoft/windows 8.1 · microsoft/windows rt · microsoft/windows rt 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows vista
- Source
- secure@microsoft.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2015-2546
References
- http://www.securityfocus.com/bid/76608Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1033485Broken Link, Third Party Advisory, VDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-097Patch, Vendor Advisory
- http://www.securityfocus.com/bid/76608Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1033485Broken Link, Third Party Advisory, VDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-097Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-2546US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.