March 15, 2022 · Applied Cybernetics Group
CVE-2015-2546 — Microsoft Win32k
known ransomware use
Microsoft Win32k Memory Corruption Vulnerability
- Added to KEV
2022-03-15- Federal due date
2022-04-05- Vendor
- Microsoft
- Product
- Win32k
- EPSS
- 95.4th percentile (score 0.109, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2015-2546
CISA short description
The kernel-mode driver in Microsoft Windows OS and Server allows local users to gain privileges via a crafted application.
Required action
Apply updates per vendor instructions.