vciy

CVE-2023-23368

INDEX BUILT · 2026-09-20

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QTS, QuTS hero, QuTScloud

CVE-2023-233684 of 4 sources documented this
40

rank 40 = 5 + 25 + 0 + 10 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.18833  ·  without this subject the record ranks 35

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 15

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 40

How much of the world it touches

NVD CPE configurations

20 products in the CPE ranges  ·  without this subject the record ranks 30

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 40

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$940,000over the next 30 days, if this record is yours
Movement-$422,000on 2025-03-30, the last material move, 1 year, 3 months before this reading
Basisassumeda published average, not your estate

$940,000 = $4.99M incident cost x 1 exposure x 0.18833 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

0.18833EPSSNOT IN KEVas of 2026-09-20
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationnone in held sources
Defensefix version namedreceipt
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 31 days at 0.19, as of 2026-07-16. arc-rules@v1

Foresight · where to check next

CVE-2023-43208CVE-2021-27104QNAP Systems Inc.CVE-2019-15107CVE-2019-16057CVE-2018-1056223368

This record is one instance of CWE-78, improper neutralization of special elements used in an os command ('os command injection'). The index holds 6775 prior instances of this class, 121 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 · the CNA's vectorreceipt
Weakness classCWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')receipt
Published consequencesCWE-78: Confidentiality, Integrity, Availability, Non-Repudiation: Execute Unauthorized Code or Commands, DoS: Crash, Exit, or Restart, Read Files or Directories, Modify Files or Directories, Read…[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in5.0.1.2376 build 20230421; 4.5.4.2374 build 20230416receipt
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 CNA9.8 CRITICALreceipt
CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.18833 · top 3% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byqnapreceipt
Recorded changes16 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productQNAP Systems Inc. QTS; QNAP Systems Inc. QuTS hero; QNAP Systems Inc. QuTScloudreceipt
Published rangesqnap qts 5.0.1; qnap qts 5.0.1.2034; qnap qts 5.0.1.2079; qnap qts 5.0.1.2131receipt
Show all 20 published ranges
qnap qts 5.0.1
qnap qts 5.0.1.2034
qnap qts 5.0.1.2079
qnap qts 5.0.1.2131
qnap qts 5.0.1.2137
qnap qts 5.0.1.2145
qnap qts 5.0.1.2173
qnap qts 5.0.1.2194
qnap qts 5.0.1.2234
qnap qts 5.0.1.2248
qnap qts 5.0.1.2277
qnap qts 5.0.1.2346
qnap qts 4.5.4
qnap qts 4.5.4.1715
qnap qts 4.5.4.1723
qnap qts 4.5.4.1741
qnap qts 4.5.4.1787
qnap qts 4.5.4.1800
qnap qts 4.5.4.1892
qnap qts 4.5.4.1931
Fixed in5.0.1.2376 build 20230421; 4.5.4.2374 build 20230416receipt

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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Attack path

Unauthenticated network requestno credentials, no interactionQNAP Systems Inc. QTSCWE-78 OS command injectionFull compromise (C/I/A)C:H / I:H / A:Hexploits CWE-78data compromise

What it is stated by the CNA

An OS command injection vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to execute commands via a network. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2376 build 20230421 and later QTS 4.5.4.2374 build 20230416 and later QuTS hero h5.0.1.2376 build 20230421 and later QuTS hero h4.5.4.2374 build 20230417 and later QuTScloud c5.0.1.2374 and later 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-78
affected versions
qnap qts 5.0.1; qnap qts 5.0.1.2034; qnap qts 5.0.1.2079; and 17 more, listed in full below
also scored by
[email protected] 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

check it yourself qnap.com receipt

Dated events

2025-03-29EPSS moved 0.05 to 0.132025-03-30EPSS moved 0.13 to 0.052026-06-15EPSS moved 0.04 to 0.19

Movement the material steps

4 Nov 20230.00043
17 Mar 20250.02865 · scoring model v2025.03.14
29 Mar 20250.13386 · crossed 0.10
30 Mar 20250.04924 · crossed 0.10
15 Jun 20260.18687 · crossed 0.10 · scoring model v2026.06.15
16 Jul 20260.18833

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

Show all 16 observations
4 Nov 20230.00043
16 Nov 20230.00068
3 Oct 20240.00077
9 Nov 20240.00124
17 Mar 20250.02865
19 Mar 20250.03777
24 Mar 20250.04924
29 Mar 20250.13386
30 Mar 20250.04924
6 Apr 20250.04663
29 Jun 20250.04591
2 Jul 20250.03562
18 Nov 20250.01203
21 Nov 20250.03562
15 Jun 20260.18687
16 Jul 20260.18833

16 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 0.18833Published2023-11-03Index as of2026-07-16

Exploit probability more than doubled between 2025-11-18 and 2025-11-21 (0.01203 → 0.03562) and the record had been public for 2 years, 8 months when this index was last written.

Published 2023-11-03 receipt · Index as of 2026-07-16 derived

The pattern, elsewhere

This record is one instance of CWE-78, improper neutralization of special elements used in an os command ('os command injection'). The index holds 6775 prior instances of this class, 121 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2023-43208matches 8 of 8KEV listed · 2023receipt
CVE-2021-27104matches 8 of 8KEV listed · 2021receipt
CVE-2018-19949 · QNAP Systems Inc. QTSmatches 9 of 9KEV listed · 2020receipt
CVE-2019-15107matches 8 of 8KEV listed · 2019receipt
CVE-2019-16057matches 8 of 8KEV listed · 2019receipt
CVE-2018-10562matches 8 of 8KEV listed · 2018receipt

"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

6775 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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