vciy

CVE-2023-50917

INDEX BUILT · 2026-09-20

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MajorDoMo (aka Major Domestic Module) before 0662e5e allows command execution via thumb.php shell metacharacters

CVE-2023-509173 of 4 sources documented this
48

rank 48 = 21 + 25 + 0 + 2 + 0

rank@v1 · this cycle

Someone is already using it

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

EPSS 0.38007  ·  without this subject the record ranks 27

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 23

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 48

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 46

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 48

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$1.90Mover the next 30 days, if this record is yours
Movement+$165,000on 2025-11-21, the last material move, 8 months before this reading
Basisassumeda published average, not your estate

$1.90M = $4.99M incident cost x 1 exposure x 0.38007 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

0.38007EPSSNOT IN KEVas of 2026-09-20
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationpublic proof-of-conceptreceipt
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-06-15, 50 days at 0.38, as of 2026-08-04. arc-rules@v1

Foresight · where to check next

CVE-2024-55956QNAP Systems Inc.BeyondTrustSophos WebAria OperationsCVE-2016-2001750917

This record is one instance of CWE-77, improper neutralization of special elements used in a command ('command injection'). The index holds 3852 prior instances of this class, 37 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-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')receipt
Published consequencesCWE-77: Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands[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 branchmajordomo 2023-11-15receipt
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, 2023-10-29.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2023-10-29receipt
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.38007 · top 2% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymitrereceipt
Recorded changes56 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesMjdm majordomoreceipt
Published rangesmjdm majordomo < 2023-11-15receipt

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

MajorDoMo (aka Major Domestic Module) before 0662e5e allows command execution via thumb.php shell metacharacters. NOTE: this is unrelated to the Majordomo mailing-list manager. 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-77
affected versions
mjdm majordomo < 2023-11-15

check it yourself github.com github.com seclists.org packetstormsecurity.com packetstormsecurity.com receipt

Dated events

2024-01-20EPSS moved 0.02 to 0.662026-06-15EPSS moved 0.93 to 0.38

Movement the material steps

16 Dec 20230.00042
20 Jan 20240.66176 · crossed 0.10 and 0.50
3 May 20240.76233
29 Jun 20240.60574
26 Aug 20240.76464
21 Oct 20240.65054
26 Nov 20240.77730
17 Mar 20250.89317 · scoring model v2025.03.14
15 Apr 20250.92165 · crossed 0.90
18 Nov 20250.89317 · crossed 0.90
21 Nov 20250.92618 · crossed 0.90
15 Jun 20260.38263 · crossed 0.50 and 0.90 · scoring model v2026.06.15
4 Aug 20260.38007
Show all 53 observations
16 Dec 20230.00042
20 Dec 20230.00100
21 Dec 20230.00104
11 Jan 20240.02327
20 Jan 20240.66176
24 Jan 20240.69459
19 Feb 20240.72229
18 Mar 20240.71101
31 Mar 20240.73739
25 Apr 20240.73690
3 May 20240.76233
19 May 20240.70095
27 May 20240.71677
21 Jun 20240.70435
29 Jun 20240.60574
23 Jul 20240.69995
2 Aug 20240.69962
10 Aug 20240.66663
13 Aug 20240.68967
26 Aug 20240.76464
4 Sep 20240.77342
17 Sep 20240.81604
28 Sep 20240.78354
10 Oct 20240.70641
21 Oct 20240.65054
3 Nov 20240.62935
14 Nov 20240.72567
26 Nov 20240.77730
10 Dec 20240.79690
21 Dec 20240.80560
3 Jan 20250.82790
16 Jan 20250.83916
10 Feb 20250.85660
23 Feb 20250.84529
8 Mar 20250.86608
17 Mar 20250.89317
27 Mar 20250.89409
28 Mar 20250.89317
29 Mar 20250.89771
30 Mar 20250.89317
15 Apr 20250.92165
5 May 20250.92618
11 Sep 20250.92044
19 Oct 20250.92618
18 Nov 20250.89317
21 Nov 20250.92618
2 Jan 20260.92755
4 Feb 20260.92222
16 Mar 20260.92391
29 Mar 20260.92424
13 Apr 20260.92637
15 Jun 20260.38263
4 Aug 20260.38007

53 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 0.38007Public PoC2023-10-29Published2023-12-15Index as of2026-08-04

The record had been public for 2 years, 7 months when this index was last written.

Public PoC 2023-10-29 receipt · Published 2023-12-15 receipt · Index as of 2026-08-04 derived

The pattern, elsewhere

This record is one instance of CWE-77, improper neutralization of special elements used in a command ('command injection'). The index holds 3852 prior instances of this class, 37 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2024-55956matches 8 of 8KEV listed · 2024receipt
CVE-2018-19949 · QNAP Systems Inc. QTSmatches 8 of 8KEV listed · 2020receipt
CVE-2024-12356 · BeyondTrust Remote Supportmatches 8 of 8KEV listed · 2024receipt
CVE-2023-1671 · Sophos Web Appliancematches 8 of 8KEV listed · 2023receipt
CVE-2023-20887 · Aria Operations for Networks (Formerly…matches 8 of 8KEV listed · 2023receipt
CVE-2016-20017matches 8 of 8KEV listed · 2022receipt

"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

3852 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.

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