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CVE-2018-8611

INDEX BUILT · 2026-09-20

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An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory, aka "Windows Kernel Elevation of…

CVE-2018-86114 of 4 sources documented this
72

rank 72 = 40 + 20 + 2 + 4 + 6

rank@v1 · act now

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.04196 · CISA KEV listed  ·  without this subject the record ranks 32

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.8, from NVD  ·  without this subject the record ranks 52

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-10-30  ·  without this subject the record ranks 70

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 68

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 66

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$209,000over the next 30 days, if this record is yours
Movement+$608,000on 2025-10-30, the last material move, 10 months before this reading
Basisassumeda published average, not your estate

$209,000 = $4.99M incident cost x 1 exposure x 0.04196 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.04196EPSSKEV · LISTED
Severity7.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 81 days at 0.04, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

Microsoft WindowsMicrosoft WindowsMicrosoft WindowsMicrosoft WindowsCisco IOS8611

This record is one instance of CWE-404, improper resource shutdown or release. The index holds 819 prior instances of this class, 5 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachneeds local access · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-404 Improper Resource Shutdown or Releasereceipt
Published consequencesCWE-404: Availability, Other: DoS: Resource Consumption (Other), Varies by Context; Confidentiality: Read Application Data[email protected]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed inNo fix version in held sources, as the index stood on 4 Sep 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
CISA remediation statusoverdue since 2022-06-14receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV1259 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2022-05-24.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 2 public repositories2021-04-27receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2022-05-24receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD7.8 HIGHreceipt
Exploit probability0.04196 · top 10% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes61 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows 7; Microsoft Windows Server 2012 R2; Microsoft Windows RT 8.1; Microsoft Windows Server 2008; Microsoft Windows Server 2019; Microsoft Windows Server 2012; Microsoft Windows 8.1…receipt
Published rangesmicrosoft windows server 2008 r2; microsoft windows server 2012 r2receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory, aka "Windows Kernel 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. receipt

NVD's analysis a second authority

severity
7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-404
affected versions
microsoft windows server 2008 r2; microsoft windows server 2012 r2
also scored by
7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

check it yourself securityfocus.com portal.msrc.microsoft.com receipt

Dated events

2021-04-27EPSS moved 0.07 to 0.242022-02-04EPSS moved 0.24 to 0.022022-05-24Added to CISA KEV2022-06-14CISA remediation due2026-06-15EPSS moved 0.16 to 0.04

Movement the material steps

14 Apr 20210.06701
27 Apr 20210.24372 · crossed 0.10
4 Feb 20220.01681 · crossed 0.10
7 Mar 20235e-4 · scoring model v2023.03.01
17 Mar 20250.10576 · crossed 0.10 · scoring model v2025.03.14
28 Mar 20250.03729 · crossed 0.10
29 Mar 20250.16433 · crossed 0.10
30 Mar 20250.03729 · crossed 0.10
30 Oct 20250.17638 · crossed 0.10
15 Jun 20260.04196 · crossed 0.10 · scoring model v2026.06.15
9 Jul 20260.04196

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 47 observations
14 Apr 20210.06701
27 Apr 20210.24372
4 Feb 20220.01681
7 Mar 20235e-4
8 Mar 20230.00050
22 Mar 20230.00063
9 Jun 20230.00068
8 Aug 20230.00061
4 Sep 20230.00268
5 Sep 20230.00061
31 Jul 20240.00078
27 Aug 20240.00089
21 Oct 20240.00127
17 Dec 20240.00193
27 Dec 20240.00136
6 Feb 20250.00124
17 Mar 20250.10576
19 Mar 20250.16433
20 Mar 20250.10482
27 Mar 20250.16433
28 Mar 20250.03729
29 Mar 20250.16433
30 Mar 20250.03729
9 Apr 20250.0441
15 May 20250.05481
17 May 20250.0441
22 May 20250.04413
4 Jun 20250.0441
17 Jun 20250.0651
29 Jun 20250.07483
8 Jul 20250.06406
19 Sep 20250.0641
2 Oct 20250.06406
10 Oct 20250.05562
22 Oct 20250.05447
30 Oct 20250.17638
18 Nov 20250.15143
21 Nov 20250.17647
24 Nov 20250.17638
18 Dec 20250.16358
18 Feb 20260.16366
20 Feb 20260.16358
23 May 20260.16366
5 Jun 20260.16358
15 Jun 20260.04196
28 Jun 20260.04161
9 Jul 20260.04196

47 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.04196Published2018-12-12Public PoC2021-04-27CISA KEV2022-05-24Index as of2026-09-04

Listed by CISA 1259 days after it published, exploit probability more than doubled between 2025-03-28 and 2025-03-29 (0.03729 → 0.16433) and the record had been public for 7 years, 8 months when this index was last written.

No material movement in 57 days as of the last ingest this index recorded.

Published 2018-12-12 receipt · Public PoC 2021-04-27 receipt · CISA KEV 2022-05-24 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-404, improper resource shutdown or release. The index holds 819 prior instances of this class, 5 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2018-8405 · Microsoft Windows Server 2012 R2matches 9 of 9KEV listed · 2018receipt
CVE-2018-8406 · Microsoft Windows Server 2016matches 9 of 9KEV listed · 2018receipt
CVE-2018-8639 · Microsoft Windows 7matches 9 of 9KEV listed · 2018receipt
CVE-2018-8120 · Microsoft Windows Server 2008matches 8 of 9KEV listed · 2018receipt
CVE-2017-6627 · Cisco IOS and Cisco IOS XEmatches 4 of 9KEV listed · 2017receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

819 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

Siblings and hubs

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