vciy

CVE-2024-39949

INDEX BUILT · 2026-09-20

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A vulnerability has been found in Dahua products. Attackers can send carefully crafted data packets to the interface with vulnerabilities, causing…

CVE-2024-399494 of 4 sources documented this
29

rank 29 = 0 + 19 + 0 + 10 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.00560  ·  without this subject the record ranks 29

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.5, 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 29

How much of the world it touches

NVD CPE configurations

20 products in the CPE ranges  ·  without this subject the record ranks 19

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 29

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$17,100over 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

$17,100 = $4.99M incident cost x 0.6121449559255632 exposure x 0.0056 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

0.0056EPSSNOT IN KEVas of 2026-09-20
Severity7.5 HIGHreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2024-07-31, 684 days at 0.01, 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

Running Dahua NVR4XXX? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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AcceptDeferPatch by…Not affectedMitigated

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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 availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-617 Reachable Assertionreceipt
Published consequencesCWE-617: Availability: DoS: Crash, Exit, or Restart[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 branchnvr4104-4ks2\/l firmware 4.003.0000000.1.r.240515; nvr4104-p-4ks2\/l firmware 4.003.0000000.1.r.240515; nvr4104hs-4ks2\/l firmware 4.003.0000000.1.r.240515…receipt
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 CNA7.5 HIGHreceipt
CVSS, NVD7.5 HIGHreceipt
Exploit probability0.0056 · top 55% of all CVEsreceipt
Blast breadth20 products across 1 vendorderived
Assigned bydahuareceipt
Recorded changes21 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productDahua NVR4XXXreceipt
Published rangesdahuasecurity nvr4104-4ks2\/l firmware < 4.003.0000000.1.r.240515; dahuasecurity nvr4108-4ks2\/l firmware 4.003.0000000.1.r.240515; dahuasecurity nvr4116-4ks2\/l firmware < 4.003.0000000.1.r.240515; dahuasecurity nvr4104-p-4ks2\/l firmware < 4.003.0000000.1.r.240515receipt
Show all 20 published ranges
dahuasecurity nvr4104-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4108-4ks2\/l firmware 4.003.0000000.1.r.240515
dahuasecurity nvr4116-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4104-p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4108-p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4108-8p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4116-8p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4104hs-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4108hs-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4104hs-p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4108hs-p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4108hs-8p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4116hs-8p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4204-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4208-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4216-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4204-p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4208-8p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4216-16p-4ks2\/l firmware < 4.003.0000000.1.r.240515
dahuasecurity nvr4232-4ks2\/l firmware < 4.003.0000000.1.r.240515

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 interactionDahua NVR4XXXCWE-617 weaknessAvailability lossA:Hexploits CWE-617data compromise

What it is stated by the CNA

A vulnerability has been found in Dahua products. Attackers can send carefully crafted data packets to the interface with vulnerabilities, causing the device to crash. receipt

NVD's analysis a second authority

severity
7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
weakness
CWE-617; CWE-20
affected versions
dahuasecurity nvr4104-4ks2\/l firmware < 4.003.0000000.1.r.240515; dahuasecurity nvr4108-4ks2\/l firmware 4.003.0000000.1.r.240515; dahuasecurity nvr4116-4ks2\/l firmware < 4.003.0000000.1.r.240515; and 17 more, listed in full below
also scored by
[email protected] 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

check it yourself dahuasecurity.com receipt

Movement the material steps

31 Jul 20240.00043
17 Mar 20250.00279 · scoring model v2025.03.14
15 Jun 20260.0056 · scoring model v2026.06.15
Show all 21 observations
31 Jul 20240.00043
20 Aug 20240.00046
17 Mar 20250.00279
29 Mar 20250.00333
30 Mar 20250.00279
5 Apr 20250.00304
15 Apr 20250.0022
16 Apr 20250.00223
26 Apr 20250.00248
17 May 20250.00233
27 May 20250.0024
8 Sep 20250.00298
30 Sep 20250.00166
17 Oct 20250.00171
25 Oct 20250.00166
18 Nov 20250.00332
21 Nov 20250.00166
30 Dec 20250.00525
2 Mar 20260.00166
23 Mar 20260.00525
15 Jun 20260.0056

21 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 0.0056Published2024-07-31Index as of2026-06-15

The record had been public for 1 year, 10 months when this index was last written.

Published 2024-07-31 receipt · Index as of 2026-06-15 derived

Siblings and hubs

Records related to this one

Fixed with these, by one advisory

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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