vciy

CVE-2021-28472

INDEX BUILT · 2026-09-20

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Visual Studio Code Maven for Java Extension Remote Code Execution Vulnerability

CVE-2021-284724 of 4 sources documented this
35

rank 35 = 15 + 17 + 1 + 2 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.61751  ·  without this subject the record ranks 20

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 18

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-01-11  ·  without this subject the record ranks 34

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 33

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 35

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$3.08Mover the next 30 days, if this record is yours
Movement+$412,000on 2025-11-21, the last material move, 9 months before this reading
Basisassumeda published average, not your estate

$3.08M = $4.99M incident cost x 1 exposure x 0.61751 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

0.61751EPSSNOT IN KEVas of 2026-09-20
Severity7.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 91 days at 0.62, as of 2026-09-14. 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
Microsoft7.8 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 Visual Studio Code - Maven for…? 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.

Watch this record

Matches your own product list against every record this index holds, and tells you when one of them moves.

What counts as a move

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Record your call

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AcceptDeferPatch by…Not affectedMitigated

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Private to your organization unless you share it. Put the proof link in your ticket so a reviewer can inspect the basis for your call. See how decision records work.

Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachneeds local access · no privileges required · user interaction required · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
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.

First unaffected version, by branchvscode-maven 0.29.0receipt
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 CNA7.8 HIGHreceipt
CVSS, NVD6.8 MEDIUMreceipt
Exploit probability0.61751 · top 0.87% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes63 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Visual Studio Code - Maven for Java Extensionreceipt
Published rangesmicrosoft vscode-maven < 0.29.0receipt

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.

Did this affect your environment?Answering needs an account.

What it is stated by the CNA

Visual Studio Code Maven for Java Extension Remote Code Execution Vulnerability 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 vscode-maven < 0.29.0
also scored by
[email protected] 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · [email protected] 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

The CNA scored it 7.8 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

2021-04-27EPSS moved 0.01 to 0.102026-06-15EPSS moved 0.25 to 0.63

Movement the material steps

14 Apr 20210.00918
6 Jan 20220.32208 · crossed 0.10
4 Feb 20220.12761
1 Apr 20220.01528 · crossed 0.10
7 Mar 20230.00213 · scoring model v2023.03.01
30 Aug 20230.27533 · crossed 0.10
13 Sep 20230.02309 · crossed 0.10
26 Sep 20230.38247 · crossed 0.10
10 Oct 20230.02876 · crossed 0.10
11 Jan 20240.15220 · crossed 0.10
23 Jan 20240.04080 · crossed 0.10
19 Mar 20240.10568 · crossed 0.10
1 Apr 20240.04452 · crossed 0.10
16 Apr 20240.10351 · crossed 0.10
30 Apr 20240.06521 · crossed 0.10
16 May 20240.27661 · crossed 0.10
30 May 20240.10070
30 Jun 20240.07927 · crossed 0.10
15 Jul 20240.13299 · crossed 0.10
30 Jul 20240.01331 · crossed 0.10
17 Mar 20250.07313 · scoring model v2025.03.14
29 Mar 20250.14765 · crossed 0.10
30 Mar 20250.07154 · crossed 0.10
4 Sep 20250.12255 · crossed 0.10
18 Nov 20250.04005 · crossed 0.10
21 Nov 20250.12255 · crossed 0.10
4 Mar 20260.25015
15 Jun 20260.63034 · crossed 0.50 · scoring model v2026.06.15
14 Sep 20260.61751

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

Show all 63 observations
14 Apr 20210.00918
27 Apr 20210.09575
6 Jan 20220.32208
4 Feb 20220.12761
1 Apr 20220.01528
2 Jul 20220.01648
30 Oct 20220.01789
7 Mar 20230.00213
29 Mar 20230.00239
10 May 20230.00259
24 May 20230.00302
7 Jun 20230.00329
21 Jun 20230.00306
6 Jul 20230.00378
18 Jul 20230.01186
3 Aug 20230.00850
15 Aug 20230.02740
30 Aug 20230.27533
13 Sep 20230.02309
26 Sep 20230.38247
10 Oct 20230.02876
23 Oct 20230.03022
6 Nov 20230.09553
18 Nov 20230.03069
2 Dec 20230.05463
15 Dec 20230.03523
28 Dec 20230.06784
11 Jan 20240.15220
23 Jan 20240.04080
7 Feb 20240.06613
20 Feb 20240.05507
5 Mar 20240.04062
19 Mar 20240.10568
1 Apr 20240.04452
16 Apr 20240.10351
30 Apr 20240.06521
16 May 20240.27661
30 May 20240.10070
14 Jun 20240.15411
30 Jun 20240.07927
15 Jul 20240.13299
30 Jul 20240.01331
16 Aug 20240.01174
31 Aug 20240.01182
16 Sep 20240.01117
3 Oct 20240.01351
21 Oct 20240.01263
8 Nov 20240.01123
25 Nov 20240.01117
17 Dec 20240.01664
31 Jan 20250.01650
17 Mar 20250.07313
19 Mar 20250.07154
29 Mar 20250.14765
30 Mar 20250.07154
6 Jul 20250.09408
4 Sep 20250.12255
18 Nov 20250.04005
21 Nov 20250.12255
11 Jan 20260.20029
4 Mar 20260.25015
15 Jun 20260.63034
14 Sep 20260.61751

63 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 0.61751Published2021-04-13Index as of2026-09-14

Exploit probability more than doubled between 2025-11-18 and 2025-11-21 (0.04005 → 0.12255) and the record had been public for 5 years, 5 months when this index was last written.

Published 2021-04-13 receipt · Index as of 2026-09-14 derived

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