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CVE-2018-8453

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 8.1, Windows Server 2008, Windows Server 2…

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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 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
CVSS 7.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.5/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 7.8: +1.17
  • Fresh EPSS: 70.04%: +0.35

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 12 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Check Point Research
Press · 26 Oct 2020, 07:00 · Exploit Developer Spotlight: The Story of PlayBit - Check Point Research
Computer Weekly
Press · 03 Jul 2019, 07:00 · Sodin ransomware exploiting Windows zero-day, Kaspersky warns - Computer Weekly
Securelist
Press · 03 Jul 2019, 07:00 · Sodin ransomware exploits Windows vulnerability and processor architecture - Securelist
Securelist
Press · 15 Apr 2019, 07:00 · New zero-day vulnerability CVE-2019-0859 in win32k.sys - Securelist
IT Security Guru
Press · 12 Dec 2018, 08:00 · Kaspersky Lab Uncovers Third Windows Zero Day Exploit In Three Months. - IT Security Guru
See all 12 source documents
Securelist
Press · 12 Dec 2018, 08:00 · Zero-day in Windows Kernel Transaction Manager (CVE-2018-8611) - Securelist
BleepingComputer
Press · 14 Nov 2018, 08:00 · Microsoft Patches Windows Zero-Day Exploited in Cyber Attacks - BleepingComputer
Tripwire
Press · 01 Nov 2018, 07:00 · Tripwire Patch Priority Index for October 2018 - Tripwire
TechTarget
Press · 10 Oct 2018, 07:00 · October Patch Tuesday grounds JET Database Engine flaw - TechTarget
Kaspersky
Press · 10 Oct 2018, 07:00 · Zero-day vulnerability in Windows captured by our technologies - Kaspersky
Securelist
Press · 10 Oct 2018, 07:00 · Zero-day exploit (CVE-2018-8453) used in targeted attacks - Securelist
www.trendmicro.com
Press · 10 Oct 2018, 07:00 · Patch Tuesday Fixes JET Database Engine, Win32K bugs - www.trendmicro.com

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.5 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

Source entries and unverified repository candidates are counted separately.

Public exploit evidence
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 7.8; EPSS 70.0%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
local access, no prior privileges, user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:02.857210+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
10 Oct 2018, 07:00
Published
10 Oct 2018, 13:00
Latest press mention
26 Oct 2020, 07:00
Added to the CISA KEV catalog
21 Jan 2022, 00:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
1 repositories