vciy

CVE-2017-8464

INDEX BUILT · 2026-09-20

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Windows Shell in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT…

CVE-2017-84644 of 4 sources documented this
72

rank 72 = 40 + 22 + 0 + 4 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.89920 · 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 8.8, from NVD  ·  without this subject the record ranks 50

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 72

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$4.49Mover the next 30 days, if this record is yours
Movement-$5,290on 2026-09-17, the last material move
Basisassumeda published average, not your estate

$4.49M = $4.99M incident cost x 1 exposure x 0.8992 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

0.8992EPSSKEV · LISTED
Severity8.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementthreshold crossedreceipt
PLATEAU10Minimal movement since 2021-04-14, 1982 days at 0.90, as of 2026-09-17. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running Microsoft Corporation Windows Shell? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · user interaction required · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classNo CWE mapping in held sources.
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 17 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 2022-08-10receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV1701 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2022-02-10.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 9 public repositories2016-02-24receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2022-02-10receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD8.8 HIGHreceipt
Exploit probability0.8992 · top 0.21% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes52 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Corporation Windows Shellreceipt
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

Windows Shell in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows local users or remote attackers to execute arbitrary code via a crafted .LNK file, which is not properly handled during icon display in Windows Explorer or any other application that parses the icon of the shortcut. aka "LNK Remote Code Execution Vulnerability." receipt

NVD's analysis a second authority

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

check it yourself exploit-db.com portal.msrc.microsoft.com exploit-db.com securitytracker.com securityfocus.com receipt

Dated events

2022-02-04EPSS moved 0.85 to 0.962022-02-10Added to CISA KEV2022-08-10CISA remediation due2026-09-17EPSS moved 0.90 to 0.90

Movement the material steps

14 Apr 20210.84929
4 Feb 20220.96393 · crossed 0.90
7 Mar 20230.97484 · scoring model v2023.03.01
17 Mar 20250.93639 · scoring model v2025.03.14
15 Jun 20260.90026 · scoring model v2026.06.15
24 Jul 20260.88582 · crossed 0.90
28 Aug 20260.90026 · crossed 0.90
17 Sep 20260.8992 · crossed 0.90
Show all 38 observations
14 Apr 20210.84929
4 Feb 20220.96393
7 Mar 20230.97484
24 Apr 20230.97474
25 May 20230.97463
30 Jun 20230.97456
9 Dec 20230.97473
16 Jan 20240.97504
26 Feb 20240.97478
18 May 20240.97464
27 Jun 20240.97484
7 Aug 20240.97470
15 Sep 20240.97423
22 Oct 20240.97370
25 Nov 20240.97405
17 Dec 20240.96992
28 Dec 20240.97163
31 Jan 20250.97190
17 Mar 20250.93639
9 Apr 20250.93644
25 May 20250.93542
16 Jul 20250.93709
5 Aug 20250.93692
16 Aug 20250.93709
25 Aug 20250.93692
31 Aug 20250.93388
1 Sep 20250.93498
13 Sep 20250.93388
22 Oct 20250.93637
18 Nov 20250.92286
21 Nov 20250.93637
4 Dec 20250.93878
19 Dec 20250.93891
1 Jan 20260.93878
15 Jun 20260.90026
24 Jul 20260.88582
28 Aug 20260.90026
17 Sep 20260.8992

38 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 0.8992Public PoC2016-02-24Published2017-06-15CISA KEV2022-02-10Index as of2026-09-17

Listed by CISA 1701 days after it published and the record had been public for 9 years, 3 months when this index was last written.

Public PoC 2016-02-24 receipt · Published 2017-06-15 receipt · CISA KEV 2022-02-10 receipt · Index as of 2026-09-17 derived

Siblings and hubs

Records related to this one

Its defect family

microsoft corporation windows shell

Of the 3 records in this family that state one, this holds the highest NVD CVSS score: 8.8.

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: held values

This record is one of a group, and the group's page describes all of them. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

Browse the index from here

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What usually comes next

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