CriticalCVECISA — Known Exploited Vulnerabilities· 3 Mar 2025

CVE-2018-8639 — Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability

Severity: Critical · Kind: Vulnerability

Plain-English summary on the way

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From the source

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

Vulnerability facts

CVE: CVE-2018-8639
On CISA KEV since: 2025-03-03
Ransomware use: Known

Read the original advisory →← All threat intel

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Plain-English summaries are AI-generated and reviewed for tone, not technical accuracy. For incident response, always rely on the original source linked above.