CVE-2018-8639
Act now ● On CISA KEV — actively exploited used in ransomware
Actively exploited — on the CISA KEV list.
CVSS base
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EPSS — probability of exploitation (30 days)
22.2%
97.6th percentile
CISA KEV
Listed
Added 2025-03-03 · patch by 2025-03-24
Weakness / dates
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Published — · modified —
Timeline
- 2025-03-03 — Added to CISA KEV (actively exploited)
- 2025-03-24 — CISA patch-by deadline
Description
Microsoft Windows Win32k contains an improper resource shutdown or release vulnerability that allows for local, authenticated privilege escalation. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode.