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CVE-2020-1593

INDEX BUILT · 2026-09-20

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Windows Media Audio Decoder Remote Code Execution Vulnerability

CVE-2020-15934 of 4 sources documented this
26

rank 26 = 1 + 17 + 0 + 8 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.02820  ·  without this subject the record ranks 25

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.8, from NVD  ·  without this subject the record ranks 9

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 26

How much of the world it touches

NVD CPE configurations

11 products in the CPE ranges  ·  without this subject the record ranks 18

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 26

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$101,000over the next 30 days, if this record is yours
Movement-$387,000on 2025-03-30, the last material move, 1 year, 2 months before this reading
Basisassumeda published average, not your estate

$101,000 = $4.99M incident cost x 0.7179585840212677 exposure x 0.0282 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

0.0282EPSSNOT IN KEVas of 2026-09-20
Severity7.6 HIGHreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2025-03-30, 442 days at 0.03, as of 2026-06-15. 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

Sources disagree here.

Severity score
Microsoft7.6 HIGHreceipt
NVD6.8 MEDIUMreceipt
Scoring standard
MicrosoftCVSS v3.1receipt
NVDCVSS v2.0receipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

Running Microsoft Windows 10 Version 2004? 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 · low privileges required · user interaction required · low attack complexityreceipt
ImpactComplete confidentiality loss; partial integrity loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.1 · the CNA'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 15 Jun 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, the CNA7.6 HIGHreceipt
CVSS, NVD6.8 MEDIUMreceipt
Exploit probability0.0282 · top 14% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes40 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows 10 Version 2004; Microsoft Windows Server version 2004; Microsoft Windows 10 Version 1803; Microsoft Windows 10 Version 1809; Microsoft Windows Server 2019…receipt
Published rangesmicrosoft windows 10 1607; microsoft windows 10 1709; microsoft windows 10 1803; microsoft windows 10 1809receipt
Show all 11 published ranges
microsoft windows 10 1607
microsoft windows 10 1709
microsoft windows 10 1803
microsoft windows 10 1809
microsoft windows 10 1903
microsoft windows 10 1909
microsoft windows 10 2004
microsoft windows server 2012 r2
microsoft windows server 2016 1903
microsoft windows server 2016 1909
microsoft windows server 2016 2004

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

<p>A remote code execution vulnerability exists when Windows Media Audio Decoder improperly handles objects. An attacker who successfully exploited the vulnerability could take control of an affected system.</p> <p>There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit a malicious webpage.</p> <p>The security update addresses the vulnerability by correcting how Windows Media Audio Decoder handles objects.</p> receipt

NVD's analysis a second authority

severity
6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
affected versions
microsoft windows 10 1607; microsoft windows 10 1709; microsoft windows 10 1803; and 8 more, listed in full below
also scored by
[email protected] 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N · [email protected] 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

The CNA scored it 7.6 and NVD 6.8. Both are shown because both were published; we do not pick one.

check it yourself portal.msrc.microsoft.com receipt

Dated events

2022-01-06EPSS moved 0.10 to 0.322022-04-01EPSS moved 0.38 to 0.022025-03-30EPSS moved 0.15 to 0.04

Movement the material steps

14 Apr 20210.09575
6 Jan 20220.32208 · crossed 0.10
1 Apr 20220.01875 · crossed 0.10
7 Mar 20230.06322 · scoring model v2023.03.01
17 Mar 20250.04017 · scoring model v2025.03.14
29 Mar 20250.14828 · crossed 0.10
30 Mar 20250.04017 · crossed 0.10
15 Jun 20260.0282 · scoring model v2026.06.15
Show all 40 observations
14 Apr 20210.09575
6 Jan 20220.32208
4 Feb 20220.3577
30 Mar 20220.37706
1 Apr 20220.01875
7 Mar 20230.06322
10 Mar 20230.04927
18 Apr 20230.05252
28 May 20230.06417
23 Jun 20230.05216
18 Aug 20230.05488
15 Oct 20230.07174
29 Oct 20230.05647
29 Nov 20230.04885
29 Dec 20230.05018
1 Jan 20240.02110
15 Jan 20240.01944
30 Jan 20240.01887
1 Jul 20240.01872
21 Oct 20240.02330
17 Dec 20240.05381
17 Mar 20250.04017
29 Mar 20250.14828
30 Mar 20250.04017
11 Jun 20250.0223
19 Jun 20250.01653
2 Aug 20250.01223
24 Sep 20250.016
1 Oct 20250.01785
23 Oct 20250.01727
26 Oct 20250.01696
27 Oct 20250.0152
28 Oct 20250.01696
8 Nov 20250.01255
18 Nov 20250.01086
21 Nov 20250.01255
27 Dec 20250.01124
28 Dec 20250.01255
1 Mar 20260.01278
15 Jun 20260.0282

40 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 0.0282Published2020-09-11Index as of2026-06-15

The record had been public for 5 years, 9 months when this index was last written.

Published 2020-09-11 receipt · Index as of 2026-06-15 derived

Siblings and hubs

Records related to this one

Its defect family

microsoft windows 10 version 2004

Of the 19 records in this family that state one, this holds the lowest NVD CVSS score: 6.8.

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.

Browse the index from here

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What usually comes next

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