vciy

CVE-2024-27128

INDEX BUILT · 2026-09-20

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QTS, QuTS hero

CVE-2024-271284 of 4 sources documented this
32

rank 32 = 0 + 22 + 0 + 10 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.00689  ·  without this subject the record ranks 32

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 8.8, from NVD  ·  without this subject the record ranks 10

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 32

How much of the world it touches

NVD CPE configurations

20 products in the CPE ranges  ·  without this subject the record ranks 22

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 32

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$14,700over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$14,700 = $4.99M incident cost x 0.42806422275080447 exposure x 0.00689 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

0.00689EPSSNOT IN KEVas of 2026-09-20
Severity6.4 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defensefix version namedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2024-05-22, 754 days at 0.01, as of 2026-06-15. arc-rules@v1

Foresight · where to check next

Cisco SecureCVE-2016-6366Apple iOSCVE-2018-6789CVE-2016-0099CVE-2022-3705527128

This record is one instance of CWE-120, buffer copy without checking size of input ('classic buffer overflow'). The index holds 4490 prior instances of this class, 24 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

Sources disagree here.

Severity score
Qnap6.4 MEDIUMreceipt
NVD8.8 HIGHreceipt
What it costs
QnapPartial integrity and availability loss, with impact beyond the vulnerable componentreceipt
NVDComplete confidentiality, integrity and availability lossreceipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

Running QNAP Systems Inc. QTS? Check your version

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · low privileges required · no user interaction · low attack complexityreceipt
ImpactPartial integrity and availability loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'); CWE-121 Stack-based Buffer Overflowreceipt
Published consequencesCWE-120: Integrity, Confidentiality, Availability: Modify Memory, Execute Unauthorized Code or Commands; Availability: Modify Memory, DoS: Crash, Exit, or Restart, DoS: Resource Consumption (CPU)[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in5.1.7.2770 build 20240520receipt
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 CNA6.4 MEDIUMreceipt
CVSS, NVD8.8 HIGHreceipt
Exploit probability0.00689 · top 49% of all CVEsreceipt
Blast breadth9 products across 1 vendorderived
Assigned byqnapreceipt
Recorded changes14 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productQNAP Systems Inc. QTS; QNAP Systems Inc. QuTS heroreceipt
Published rangesqnap qts 5.1.0.2348; qnap qts 5.1.0.2399; qnap qts 5.1.0.2418; qnap qts 5.1.0.2444receipt
Show all 20 published ranges
qnap qts 5.1.0.2348
qnap qts 5.1.0.2399
qnap qts 5.1.0.2418
qnap qts 5.1.0.2444
qnap qts 5.1.0.2466
qnap qts 5.1.1.2491
qnap qts 5.1.2.2533
qnap qts 5.1.3.2578
qnap qts 5.1.4.2596
qnap qts 5.1.5.2645
qnap qts 5.1.5.2679
qnap qts 5.1.6.2722
qnap quts hero h5.1.0.2409
qnap quts hero h5.1.0.2424
qnap quts hero h5.1.0.2453
qnap quts hero h5.1.0.2466
qnap quts hero h5.1.1.2488
qnap quts hero h5.1.2.2534
qnap quts hero h5.1.3.2578
qnap quts hero h5.1.4.2596
Fixed in5.1.7.2770 build 20240520receipt

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

A buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated users to execute code via a network. We have already fixed the vulnerability in the following version: QTS 5.1.7.2770 build 20240520 and later QuTS hero h5.1.7.2770 build 20240520 and later receipt

NVD's analysis a second authority

severity
8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-120; CWE-121
affected versions
qnap qts 5.1.0.2348; qnap qts 5.1.0.2399; qnap qts 5.1.0.2418; and 17 more, listed in full below
also scored by
[email protected] 6.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L

The CNA scored it 6.4 and NVD 8.8. Both are shown because both were published; we do not pick one.

check it yourself qnap.com receipt

Movement the material steps

22 May 20240.00043
17 Mar 20250.00461 · scoring model v2025.03.14
15 Jun 20260.00689 · scoring model v2026.06.15
Show all 14 observations
22 May 20240.00043
12 Sep 20240.00047
17 Mar 20250.00461
25 Mar 20250.00775
29 Mar 20250.01729
30 Mar 20250.00775
15 Apr 20250.00562
25 Jun 20250.00402
28 Jun 20250.00436
29 Jun 20250.00289
13 Jul 20250.00317
18 Nov 20250.00835
21 Nov 20250.00317
15 Jun 20260.00689

14 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 0.00689Published2024-05-21Index as of2026-06-15

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

Published 2024-05-21 receipt · Index as of 2026-06-15 derived

The pattern, elsewhere

This record is one instance of CWE-120, buffer copy without checking size of input ('classic buffer overflow'). The index holds 4490 prior instances of this class, 24 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2025-20333 · Cisco Secure Firewall Adaptive Security…matches 5 of 10KEV listed · 2025receipt
CVE-2016-6366matches 4 of 9KEV listed · 2016receipt
CVE-2025-43520 · Apple iOS and iPadOSmatches 4 of 10KEV listed · 2025receipt
CVE-2018-6789matches 3 of 9KEV listed · 2018receipt
CVE-2016-0099matches 3 of 9KEV listed · 2016receipt
CVE-2022-37055matches 3 of 9KEV 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

4490 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

Fixed with these, by one advisory

qsa-24-23

Listed because one advisory covers them, not because they are the same defect. Each record's own state is on its own page.

Grouping: held values

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What usually comes next

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Everything on this page is free. Public data. Withholding it protects nothing.