CVE-2018-8453CISA KEV

Microsoft Win32k Privilege Escalation Vulnerability

Severity unknownCVSS unknownCheck the vendor advisory for fixed versions

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

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CISA catalog record

Microsoft Windows Win32k contains a vulnerability that allows an attacker to escalate privileges.

Product: Win32k
Added to KEV: 21 Jan 2022
Federal remediation due: 21 Jul 2022
Known ransomware use: Yes

Page history

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Field-level log (2)

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23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete

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Exploitation and risk

Source status

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CVE-2018-8453

Listed in CISA KEV · added 21 Jan 2022 · Microsoft · Win32k

Microsoft Windows Win32k contains a vulnerability that allows an attacker to escalate privileges.

CISA source

No EPSS score is available here for this CVE.

Saved 23 Oct 2026 16:01:26 UTC · View this risk record (JSON)

Risk history

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CVE-2018-8453 · 23 Oct 2026 16:01:26 UTC

Advisory history

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23 Oct 2026 15:48:27 UTC

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka "Win32k Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.…

cve-program · CVE-2018-8453 · Published