vciy

CVE-2020-3952

INDEX BUILT · 2026-09-20

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Under certain conditions, vmdir that ships with VMware vCenter Server, as part of an embedded or external Platform Services Controller (PSC), does…

CVE-2020-39524 of 4 sources documented this
73

rank 73 = 40 + 25 + 0 + 2 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.90384 · CISA KEV listed  ·  without this subject the record ranks 33

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from NVD  ·  without this subject the record ranks 48

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 73

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 71

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 67

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.51Mover the next 30 days, if this record is yours
Movement+$3.07Mon 2022-02-04, the last material move, 4 years, 7 months before this reading
Basisassumeda published average, not your estate

$4.51M = $4.99M incident cost x 1 exposure x 0.90384 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

0.90384EPSSKEV · LISTED
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2024-12-26, 617 days at 0.90, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

CVE-2023-28461CVE-2022-26501Corporationlangflow-aiJetBrainsF5 BIG-IP3952

This record is one instance of CWE-306, missing authentication for critical function. The index holds 3317 prior instances of this class, 54 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

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-306 Missing Authentication for Critical Functionreceipt
Published consequencesCWE-306: Access Control, Other: Gain Privileges or Assume Identity, Varies by Context[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 4 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 KEV572 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 · 5 public repositories2020-04-15receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2021-11-03receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.90384 · top 0.21% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byvmwarereceipt
Recorded changes83 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Affected productVMware vCenter Serverreceipt
Published rangesvmware vcenter server 6.7receipt

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

Under certain conditions, vmdir that ships with VMware vCenter Server, as part of an embedded or external Platform Services Controller (PSC), does not correctly implement access controls. receipt

NVD's analysis a second authority

severity
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-306
affected versions
vmware vcenter server 6.7
also scored by
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself vmware.com packetstormsecurity.com receipt

Dated events

2021-11-03Added to CISA KEV2022-02-04EPSS moved 0.17 to 0.792022-05-03CISA remediation due2025-03-17EPSS moved 0.81 to 0.93

Movement the material steps

14 Apr 20210.1724
4 Feb 20220.78767 · crossed 0.50
7 Mar 20230.57246 · scoring model v2023.03.01
9 Dec 20230.70399
26 Dec 20240.82775
17 Mar 20250.93146 · crossed 0.90 · scoring model v2025.03.14
15 Jun 20260.90384 · scoring model v2026.06.15
Show all 69 observations
14 Apr 20210.1724
4 Feb 20220.78767
29 Jun 20220.80908
15 Sep 20220.83028
30 Dec 20220.83607
7 Mar 20230.57246
14 May 20230.59787
12 Jun 20230.58823
28 Jul 20230.62454
29 Aug 20230.63926
14 Sep 20230.61756
1 Oct 20230.64032
23 Nov 20230.63846
9 Dec 20230.70399
27 Dec 20230.72576
29 Jan 20240.73724
13 Feb 20240.75842
17 Apr 20240.74486
22 Aug 20240.71143
7 Oct 20240.68879
22 Oct 20240.70962
24 Nov 20240.75023
6 Dec 20240.71861
17 Dec 20240.78845
26 Dec 20240.82775
2 Mar 20250.80528
14 Mar 20250.81165
17 Mar 20250.93146
18 Mar 20250.93047
19 Mar 20250.93234
20 Mar 20250.93018
23 Mar 20250.93209
24 Mar 20250.93018
26 Mar 20250.93209
1 Apr 20250.93297
2 Apr 20250.93209
7 Apr 20250.93297
8 Apr 20250.93209
13 Apr 20250.93297
14 Apr 20250.93209
1 May 20250.93297
6 May 20250.93209
1 Jun 20250.93297
6 Jun 20250.93209
15 Jun 20250.93234
26 Jun 20250.93209
1 Jul 20250.93297
4 Jul 20250.93209
26 Jul 20250.93322
1 Aug 20250.9341
5 Aug 20250.93322
1 Sep 20250.9341
5 Sep 20250.93322
23 Sep 20250.93226
1 Oct 20250.93321
4 Oct 20250.93226
9 Oct 20250.93104
17 Oct 20250.93131
22 Oct 20250.93156
24 Oct 20250.94349
1 Nov 20250.94411
13 Nov 20250.94355
18 Nov 20250.9405
21 Nov 20250.94355
8 Mar 20260.94388
7 Apr 20260.94355
21 Apr 20260.94337
3 Jun 20260.94372
15 Jun 20260.90384

69 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 0.90384Published2020-04-10Public PoC2020-04-15CISA KEV2021-11-03Index as of2026-09-04

Listed by CISA 572 days after it published and the record had been public for 6 years, 4 months when this index was last written.

No material movement in 81 days as of the last ingest this index recorded.

Published 2020-04-10 receipt · Public PoC 2020-04-15 receipt · CISA KEV 2021-11-03 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-306, missing authentication for critical function. The index holds 3317 prior instances of this class, 54 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2023-28461matches 8 of 8KEV listed · 2023receipt
CVE-2022-26501matches 8 of 8KEV listed · 2022receipt
CVE-2026-35273 · Oracle Corporation PeopleSoft Enterprise…matches 8 of 9KEV listed · 2026receipt
CVE-2025-3248 · langflow-ai langflowmatches 8 of 9KEV listed · 2025receipt
CVE-2023-42793 · JetBrains TeamCitymatches 8 of 9KEV listed · 2023receipt
CVE-2023-46747 · F5 BIG-IPmatches 8 of 9KEV listed · 2023receipt

"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

3317 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

vmware vcenter server

Of the 3 records in this family that state one, this holds the highest NVD CVSS score: 9.8.

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

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.

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