Exploited· due 2022-04-058.2highHighused in ransomware
CVE-2015-2546
Microsoft Windows 10 1507
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.
Exploitation status
- CISA has confirmed this is being exploited in the wild. That is an observation of real attacks, not a prediction.
- It is known to have been used in ransomware campaigns.
- US federal civilian agencies are required to remediate it by 2022-04-05. That deadline does not bind private companies, but it is a reasonable benchmark for how urgently CISA views it.
- A vendor advisory or patch reference has been published.
Required action
Apply updates per vendor instructions.
CISA’s wording, unedited.
What the metrics mean
- It is requires local access to the machine.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, an ordinary user account is needed.
- Beyond that, someone has to be persuaded to take an action first.
Scoring
- CVSS
- 8.2 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H- Weakness
- CWE-119
- Assigned by
- secure@microsoft.com
Dates
- Published
- 2015-09-09
- Last modified
- 2026-08-14
- Added to KEV
- 2022-03-15
- Remediation due
- 2022-04-05
- Sources
- CISA KEV, NVD
Affected products
- Microsoft Windows 10 1507all versions
- Microsoft Windows 7all versions
- Microsoft Windows 8all versions
- Microsoft Windows 8.1all versions
- Microsoft Windows Rtall versions
- Microsoft Windows Rt 8.1all versions
- Microsoft Windows Server 2008all versions, r2
- Microsoft Windows Server 2012all versions, r2
- Microsoft Windows Vistaall versions
As listed in the NVD configuration data. Not a statement about your estate.