vciy

CVE-2023-43177

INDEX BUILT · 2026-09-20

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CrushFTP prior to 10.5.1 is vulnerable to Improperly Controlled Modification of Dynamically-Determined Object Attributes.

CVE-2023-431773 of 4 sources documented this
55

rank 55 = 27 + 25 + 1 + 2 + 0

rank@v1 · this cycle

Someone is already using it

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

EPSS 0.81801  ·  without this subject the record ranks 28

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 30

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-09-27  ·  without this subject the record ranks 54

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 53

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 55

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.08Mover the next 30 days, if this record is yours
Movement-$103,000on 2025-03-30, the last material move, 1 year, 2 months before this reading
Basisassumeda published average, not your estate

$4.08M = $4.99M incident cost x 1 exposure x 0.81801 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

0.81801EPSSNOT IN KEVas of 2026-09-20
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationpublic proof-of-conceptreceipt
Defenseunaffected versions publishedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2025-07-21, 329 days at 0.82, 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

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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 · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-913 Improper Control of Dynamically-Managed Code Resourcesreceipt
Published consequencesCWE-913: Integrity: Execute Unauthorized Code or Commands; Other, Integrity: Varies by Context, Alter Execution Logic[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchcrushftp 10.5.2receipt
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: Proof-of-concept published · 1 public repository, 2023-12-27.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2023-12-27receipt
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.81801 · top 0.37% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymitrereceipt
Recorded changes76 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesCrushftpreceipt
Published rangescrushftp < 10.5.2receipt

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

CrushFTP prior to 10.5.1 is vulnerable to Improperly Controlled Modification of Dynamically-Determined Object Attributes. 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-913
affected versions
crushftp < 10.5.2

check it yourself github.com convergetp.com receipt

Dated events

2024-02-07EPSS moved 0.02 to 0.932025-11-21EPSS moved 0.89 to 0.77

Movement the material steps

18 Nov 20230.00043
7 Feb 20240.93262 · crossed 0.10 and 0.50 and 0.90
17 Mar 20250.91055 · scoring model v2025.03.14
18 Mar 20250.89356 · crossed 0.90
19 Mar 20250.91055 · crossed 0.90
20 Mar 20250.89356 · crossed 0.90
23 Mar 20250.91055 · crossed 0.90
24 Mar 20250.89356 · crossed 0.90
27 Mar 20250.91055 · crossed 0.90
28 Mar 20250.89356 · crossed 0.90
29 Mar 20250.91414 · crossed 0.90
30 Mar 20250.89356 · crossed 0.90
15 Apr 20250.70469
1 Oct 20250.81413
15 Jun 20260.81801 · scoring model v2026.06.15
Show all 73 observations
18 Nov 20230.00043
30 Nov 20230.00106
13 Dec 20230.00973
27 Dec 20230.02595
22 Jan 20240.01928
7 Feb 20240.93262
3 Mar 20240.92767
13 Apr 20240.96088
21 Apr 20240.96402
1 Jun 20240.96023
25 Jun 20240.95930
5 Jul 20240.96266
29 Jul 20240.96560
7 Aug 20240.96455
20 Aug 20240.96175
12 Sep 20240.96148
23 Sep 20240.95839
6 Oct 20240.95470
17 Oct 20240.95404
29 Oct 20240.95785
12 Nov 20240.96103
23 Nov 20240.95984
6 Dec 20240.95964
17 Dec 20240.96667
19 Dec 20240.96656
31 Dec 20240.96622
26 Jan 20250.96153
8 Feb 20250.96314
21 Feb 20250.96275
6 Mar 20250.96192
17 Mar 20250.91055
18 Mar 20250.89356
19 Mar 20250.91055
20 Mar 20250.89356
23 Mar 20250.91055
24 Mar 20250.89356
27 Mar 20250.91055
28 Mar 20250.89356
29 Mar 20250.91414
30 Mar 20250.89356
15 Apr 20250.70469
1 May 20250.76481
4 May 20250.70469
1 Jun 20250.76481
4 Jun 20250.70469
1 Jul 20250.76481
4 Jul 20250.70469
21 Jul 20250.72703
1 Aug 20250.78236
4 Aug 20250.72703
28 Aug 20250.72886
1 Sep 20250.78378
4 Sep 20250.72886
27 Sep 20250.76822
1 Oct 20250.81413
4 Oct 20250.76822
1 Nov 20250.81413
4 Nov 20250.76822
18 Nov 20250.89356
21 Nov 20250.76822
30 Nov 20250.76667
1 Dec 20250.81295
4 Dec 20250.76667
15 Dec 20250.76822
1 Jan 20260.81413
4 Jan 20260.76822
1 Feb 20260.81413
4 Feb 20260.76822
1 Mar 20260.81413
4 Mar 20260.76822
12 May 20260.76055
10 Jun 20260.76822
15 Jun 20260.81801

73 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 0.81801Published2023-11-17Public PoC2023-12-27Index as of2026-06-15

The record had been public for 2 years, 6 months when this index was last written.

Published 2023-11-17 receipt · Public PoC 2023-12-27 receipt · Index as of 2026-06-15 derived

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