vciy

CVE-2020-0863

INDEX BUILT · 2026-09-20

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An information vulnerability exists when Windows Connected User Experiences and Telemetry Service improperly discloses file information, aka…

CVE-2020-08634 of 4 sources documented this
19

rank 19 = 0 + 14 + 0 + 5 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.01531  ·  without this subject the record ranks 19

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 5.5, from NVD  ·  without this subject the record ranks 5

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 19

How much of the world it touches

NVD CPE configurations

4 products in the CPE ranges  ·  without this subject the record ranks 14

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 19

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$46,800over the next 30 days, if this record is yours
Movement-$490,000on 2022-02-04, the last material move, 4 years, 4 months before this reading
Basisassumeda published average, not your estate

$46,800 = $4.99M incident cost x 0.6121449559255632 exposure x 0.01531 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

0.01531EPSSNOT IN KEVas of 2026-09-20
Severity5.5 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2022-02-04, 1609 days at 0.02, as of 2026-07-02. 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 Windows 10 Version 1909 for…? Check your version

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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 lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classNo CWE mapping in held sources.

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 2 Jul 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.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD5.5 MEDIUMreceipt
Exploit probability0.01531 · top 26% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes21 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows 10 Version 1909 for 32-bit Systems; Microsoft Windows 10 Version 1909 for x64-based Systems; Microsoft Windows 10 Version 1909 for ARM64-based Systems…receipt
Published rangesmicrosoft windows 10 1903; microsoft windows 10 1909; microsoft windows server 2016 1903; microsoft windows server 2016 1909receipt

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 information vulnerability exists when Windows Connected User Experiences and Telemetry Service improperly discloses file information, aka 'Connected User Experiences and Telemetry Service Information Disclosure Vulnerability'. receipt

NVD's analysis a second authority

severity
5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
affected versions
microsoft windows 10 1903; microsoft windows 10 1909; microsoft windows server 2016 1903; and 1 more, listed in full below

check it yourself portal.msrc.microsoft.com receipt

Dated events

2022-01-06EPSS moved 0.05 to 0.182022-02-04EPSS moved 0.18 to 0.02

Movement the material steps

14 Apr 20210.04557
6 Jan 20220.17642 · crossed 0.10
4 Feb 20220.01614 · crossed 0.10
7 Mar 20234.3e-4 · scoring model v2023.03.01
17 Mar 20250.00555 · scoring model v2025.03.14
15 Jun 20260.01497 · scoring model v2026.06.15
2 Jul 20260.01531

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

Show all 21 observations
14 Apr 20210.04557
6 Jan 20220.17642
4 Feb 20220.01614
1 Apr 20220.0115
19 Feb 20230.01376
7 Mar 20234.3e-4
8 Mar 20230.00043
8 Jul 20230.00111
17 Dec 20240.00157
17 Mar 20250.00555
25 Mar 20250.00542
28 Mar 20250.00532
29 Mar 20250.02352
30 Mar 20250.00532
9 May 20250.00392
20 May 20250.00399
22 Jun 20250.00392
18 Nov 20250.00353
21 Nov 20250.00392
15 Jun 20260.01497
2 Jul 20260.01531

21 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 0.01531Published2020-03-12Index as of2026-07-02

Exploit probability more than doubled between 2025-03-28 and 2025-03-29 (0.00532 → 0.02352) and the record had been public for 6 years, 3 months when this index was last written.

Published 2020-03-12 receipt · Index as of 2026-07-02 derived

Siblings and hubs

Records related to this one

Its defect family

microsoft windows 10

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

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What usually comes next

Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.

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