vciy

CVE-2020-0683

INDEX BUILT · 2026-09-20

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An elevation of privilege vulnerability exists in the Windows Installer when MSI packages process symbolic links, aka 'Windows Installer Elevation of…

CVE-2020-06834 of 4 sources documented this
71

rank 71 = 40 + 20 + 1 + 4 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.07605 · CISA KEV listed  ·  without this subject the record ranks 31

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 51

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-10-22  ·  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 67

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 65

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$379,000over the next 30 days, if this record is yours
Movement-$1.41Mon 2022-02-04, the last material move, 4 years, 7 months before this reading
Basisassumeda published average, not your estate

$379,000 = $4.99M incident cost x 1 exposure x 0.07605 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

0.07605EPSSKEV · LISTED
Severity7.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementfallenreceipt
PLATEAU10Minimal movement since 2026-06-15, 96 days at 0.08, as of 2026-09-19. arc-rules@v1

Foresight · where to check next

Microsoft WindowsMicrosoft WindowsMicrosoft WindowsMicrosoft Windows0683

This record is one instance of CWE-59, improper link resolution before file access ('link following'). The index holds 1732 prior instances of this class, 24 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

Running Microsoft Windows? 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.

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-59 Improper Link Resolution Before File Access ('Link Following')receipt
Published consequencesCWE-59: Confidentiality, Integrity, Access Control: Read Files or Directories, Modify Files or Directories, Bypass Protection Mechanism; Other: Execute Unauthorized Code or Commands[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 19 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 2022-05-03receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV631 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2021-11-03.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2020-02-11receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2021-11-03receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD7.8 HIGHreceipt
Exploit probability0.07605 · top 6% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes51 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows; Microsoft Windows Server; Microsoft Windows 10 Version 1903 for 32-bit Systems; Microsoft Windows 10 Version 1903 for x64-based Systems…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 in the Windows Installer when MSI packages process symbolic links, aka 'Windows Installer Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0686. 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-59
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 portal.msrc.microsoft.com receipt

Dated events

2021-11-03Added to CISA KEV2022-02-04EPSS moved 0.30 to 0.022022-05-03CISA remediation due2026-06-15EPSS moved 0.31 to 0.08

Movement the material steps

14 Apr 20210.30098
4 Feb 20220.01909 · crossed 0.10
7 Mar 20234.3e-4 · scoring model v2023.03.01
17 Mar 20250.25648 · crossed 0.10 · scoring model v2025.03.14
15 Jun 20260.07605 · crossed 0.10 · scoring model v2026.06.15
19 Sep 20260.07605
Show all 37 observations
14 Apr 20210.30098
4 Feb 20220.01909
21 Aug 20220.01865
7 Mar 20234.3e-4
8 Mar 20230.00043
16 Mar 20230.00045
1 Jul 20230.00043
8 Feb 20250.00189
17 Mar 20250.25648
19 Mar 20250.24069
20 Mar 20250.25648
27 Mar 20250.24069
28 Mar 20250.25648
29 Mar 20250.24069
30 Mar 20250.25648
28 Apr 20250.28028
5 May 20250.29884
12 Jun 20250.32718
4 Jul 20250.27418
16 Jul 20250.27927
17 Jul 20250.27418
16 Aug 20250.32042
19 Aug 20250.30475
9 Sep 20250.2597
15 Sep 20250.24843
22 Oct 20250.31886
30 Oct 20250.29402
18 Nov 20250.16999
21 Nov 20250.29402
18 Dec 20250.32988
8 Jan 20260.32732
14 Mar 20260.3446
26 Apr 20260.31056
27 May 20260.31324
15 Jun 20260.07605
17 Jun 20260.07667
19 Sep 20260.07605

37 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 0.07605Published · Public PoC2020-02-11CISA KEV2021-11-03Index as of2026-09-19

Listed by CISA 631 days after it published and the record had been public for 6 years, 7 months when this index was last written.

Published 2020-02-11 receipt · Public PoC 2020-02-11 receipt · CISA KEV 2021-11-03 receipt · Index as of 2026-09-19 derived

The pattern, elsewhere

This record is one instance of CWE-59, improper link resolution before file access ('link following'). The index holds 1732 prior instances of this class, 24 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2025-60710 · Microsoft Windows 11 Version 24H2matches 9 of 9KEV listed · 2025receipt
CVE-2022-21999 · Microsoft Windows 10 Version 1809matches 9 of 9KEV listed · 2022receipt
CVE-2020-0638 · Microsoft Windowsmatches 9 of 9KEV listed · 2020receipt
CVE-2019-0841 · Microsoft Windowsmatches 9 of 9KEV listed · 2019receipt
CVE-2019-1064 · Microsoft Windows 10 Version 1703matches 9 of 9KEV listed · 2019receipt
CVE-2019-1069 · Microsoft Windows 10 Version 1703matches 9 of 9KEV listed · 2019receipt

"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

1732 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

Records related to this one

Its defect family

microsoft windows

Of the 24 records in this family, this is the only one holding a CISA KEV listing: Microsoft Windows Installer Privilege Escalation Vulnerabili.

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

Family membership: computed, pro@dim2000

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.

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What usually comes next

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Everything on this page is free. Public data. Withholding it protects nothing.