CVE-2018-8639

Severity not reported CISA KEV

Data quality: kev only. This record comes from the CISA KEV catalog only; NVD details have not been synced yet.

Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability

Vendor / product: Microsoft — Windows

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.

CVSS

—

Not reported by the source

Timeline (UTC)

Published: not reported

Modified: not reported

NVD status: not reported

Last synced 1 day ago

Verified against the source API 2026-10-27 06:50 UTC

Exploitation

Listed in CISA KEV

Added 2025-03-03 · due 2025-03-24

Known ransomware use: Known

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-404

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

No references reported.

Data sources

CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗

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