Vulnerability Intelligence

🛡 CVE-2019-0859

Microsoft Win32k Privilege Escalation Vulnerability
Microsoft Win32k

Ransomware use

—
CISA KEV

EPSS

4.2%
Moderate · 90th pct

Added to KEV

2021-11-03
CISA

Remediate by

2022-05-03
⚠ OVERDUE

CWE

—
weakness
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📈 EPSS exploit probability

4.2%
FIRST EPSS — 30-day probability of exploitation in the wild · band Moderate · higher than 90% of all scored CVEs

⚠ KEV remediation overdue

CISA required federal remediation by 2022-05-03. This exploited vulnerability is past its Binding Operational Directive 22-01 due date — prioritize patch/mitigation and hunt for exploitation.

📄 Description

Microsoft Win32k fails to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.

🔗 External references & OSINT

NVD →CISA KEV →MITRE CVE →Exploit-DB →EPSS (FIRST) →VulnCheck →Tenable →CVE.org →GitHub PoC →Vulmon →

🔄 Internal pivots & actions

Search this CVE →Correlation graph →Generate detection rules →Timeline →Link analysis →Ransomware theater →

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