Page generated: 11 Nov 2026, 01:47 UTC
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CVE-2018-8440

An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows ALPC Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Serv…

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An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC), aka "Windows ALPC Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, 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
8.3/10
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: 18.53%: +0.09

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

Sources: 7 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

Google Cloud
Press · 13 Apr 2020, 07:00 · Think Fast: Time Between Disclosure, Patch Release and Vulnerability Exploitation — Intelligence for Vulnerability Management, Part Two - Google Cloud
Securelist
Press · 12 Nov 2018, 08:00 · IT threat evolution Q3 2018. Statistics - Securelist
TechTarget
Press · 12 Sep 2018, 07:00 · Microsoft shuts down zero-day exploit on September Patch Tuesday - TechTarget
TechTarget
Press · 12 Sep 2018, 07:00 · Microsoft patches Windows ALPC flaw exploited in the wild - TechTarget
www.trendmicro.com
Press · 12 Sep 2018, 07:00 · September Patch Tuesday: Windows Fixes ALPC Bug - www.trendmicro.com
See all 7 source documents
TechTarget
Press · 11 Sep 2018, 07:00 · Microsoft shuts down zero-day exploit on September Patch Tuesday - TechTarget
Microsoft
Press · 02 Jul 2018, 07:00 · Taking apart a double zero-day sample discovered in joint hunt with ESET - Microsoft

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 8.3 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

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 18.5%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
local access, low privileges, no 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
02 Jul 2018, 07:00
Published
13 Sep 2018, 00:00
Latest press mention
13 Apr 2020, 07:00
Added to the CISA KEV catalog
28 Mar 2022, 00:00
Score calculated
05 Nov 2026, 13:58