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CVE-2024-40711

INDEX BUILT · 2026-09-20

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A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE).

CVE-2024-407114 of 4 sources documented this
75

rank 75 = 40 + 25 + 2 + 2 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.90369 · CISA KEV listed  ·  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 50

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-11-18  ·  without this subject the record ranks 73

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 73

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 69

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.51Mover the next 30 days, if this record is yours
Movement+$101,000on 2026-07-16, the last material move, 1 month before this reading
Basisassumeda published average, not your estate

$4.51M = $4.99M incident cost x 1 exposure x 0.90369 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

0.90369EPSSKEV · LISTED
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticated · ransomware-linkedreceipt
Exploitationransomware use knownreceipt
Defenseunaffected versions publishedreceipt
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 81 days at 0.90, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

CVE-2023-43208CVE-2022-31199CVE-2021-35464CVE-2021-42237SonicWall SMA1000SolarWinds Web40711

This record is one instance of CWE-502, deserialization of untrusted data. The index holds 3287 prior instances of this class, 75 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.

Scoring standard
HackeroneCVSS v3.0receipt
NVDCVSS v3.1receipt

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

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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 v3.0 · the CNA's vectorreceipt
Weakness classCWE-502 Deserialization of Untrusted Datareceipt
Published consequencesCWE-502: Integrity: Modify Application Data, Unexpected State; Availability: DoS: Resource Consumption (CPU); Other: Varies by Context[email protected]
Ransomware campaign useKnown (CISA)receipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

First unaffected version, by branchbackup \& replication 12.2.0.334receipt
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.
CISA remediation statusoverdue since 2024-11-07receipt
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEV40 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Ransomware campaign use known, 2024-10-17.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 2 public repositories2024-09-15receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2024-10-17receipt
  • RUNG 4Ransomware campaign use known2024-10-17receipt

Authority who says so

CVSS, the CNA9.8 CRITICALreceipt
CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.90369 · top 0.21% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byhackeronereceipt
Recorded changes95 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productVeeam Backup and Recoveryreceipt
Published rangesveeam backup \& replication >= 12.0.0.1420 < 12.2.0.334receipt

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 deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE). 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-502
affected versions
veeam backup \& replication >= 12.0.0.1420 < 12.2.0.334

check it yourself veeam.com receipt

Dated events

2024-10-17Added to CISA KEV2024-10-19EPSS moved 0.02 to 0.972024-11-07CISA remediation due2026-07-16EPSS moved 0.88 to 0.90

Movement the material steps

8 Sep 20240.00043
19 Oct 20240.96763 · crossed 0.10 and 0.50 and 0.90
17 Mar 20250.47258 · crossed 0.50 and 0.90 · scoring model v2025.03.14
21 Mar 20250.51189 · crossed 0.50
22 Mar 20250.49658 · crossed 0.50
23 Mar 20250.7069 · crossed 0.50
24 Mar 20250.57176
27 Mar 20250.7069
28 Mar 20250.49658 · crossed 0.50
29 Mar 20250.70815 · crossed 0.50
30 Mar 20250.49835 · crossed 0.50
1 Apr 20250.56193 · crossed 0.50
15 Apr 20250.37778 · crossed 0.50
21 Apr 20250.49658
3 May 20250.56193 · crossed 0.50
15 May 20250.41018 · crossed 0.50
29 May 20250.56193 · crossed 0.50
15 Jun 20250.32849 · crossed 0.50
23 Jun 20250.49658
5 Jul 20250.56193 · crossed 0.50
14 Oct 20250.72332
18 Nov 20250.88553
21 Nov 20250.67629
15 Jun 20260.88193 · scoring model v2026.06.15
16 Jul 20260.90208 · crossed 0.90
21 Jul 20260.90369

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

Show all 81 observations
8 Sep 20240.00043
16 Oct 20240.00053
17 Oct 20240.00054
18 Oct 20240.01852
19 Oct 20240.96763
12 Nov 20240.96695
10 Dec 20240.96736
15 Dec 20240.96796
21 Dec 20240.96324
23 Dec 20240.96449
25 Jan 20250.96340
10 Feb 20250.96217
18 Feb 20250.96424
15 Mar 20250.96572
17 Mar 20250.47258
20 Mar 20250.41018
21 Mar 20250.51189
22 Mar 20250.49658
23 Mar 20250.7069
24 Mar 20250.57176
27 Mar 20250.7069
28 Mar 20250.49658
29 Mar 20250.70815
30 Mar 20250.49835
1 Apr 20250.56193
15 Apr 20250.37778
16 Apr 20250.41018
21 Apr 20250.49658
28 Apr 20250.49835
3 May 20250.56193
15 May 20250.41018
20 May 20250.49658
25 May 20250.49835
29 May 20250.56193
15 Jun 20250.32849
17 Jun 20250.37778
18 Jun 20250.41018
23 Jun 20250.49658
3 Jul 20250.49835
5 Jul 20250.56193
9 Sep 20250.58488
25 Sep 20250.56582
28 Sep 20250.58488
14 Oct 20250.72332
17 Oct 20250.702
19 Oct 20250.67777
22 Oct 20250.68193
31 Oct 20250.66734
14 Nov 20250.74357
18 Nov 20250.88553
21 Nov 20250.67629
22 Nov 20250.63781
23 Nov 20250.71549
24 Nov 20250.68887
5 Dec 20250.72257
6 Dec 20250.74357
21 Dec 20250.74416
23 Dec 20250.72322
2 Jan 20260.74416
7 Jan 20260.66734
14 Jan 20260.68197
18 Jan 20260.6393
28 Jan 20260.66734
4 Feb 20260.68197
4 Mar 20260.70462
21 Mar 20260.64079
22 Mar 20260.65712
26 Mar 20260.64079
3 Apr 20260.66734
9 Apr 20260.68197
21 Apr 20260.66734
22 Apr 20260.68197
7 May 20260.70591
9 May 20260.68197
12 May 20260.72696
22 May 20260.70591
26 May 20260.72696
5 Jun 20260.70462
15 Jun 20260.88193
16 Jul 20260.90208
21 Jul 20260.90369

81 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 0.90369Published2024-09-07Public PoC2024-09-15CISA KEV2024-10-17Index as of2026-09-04

Listed by CISA 40 days after it published, exploit probability more than doubled between 2024-10-17 and 2024-10-18 (0.00054 → 0.01852) and the record had been public for 1 year, 11 months when this index was last written.

No material movement in 45 days as of the last ingest this index recorded.

Published 2024-09-07 receipt · Public PoC 2024-09-15 receipt · CISA KEV 2024-10-17 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-502, deserialization of untrusted data. The index holds 3287 prior instances of this class, 75 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2023-43208matches 8 of 8KEV listed · 2023receipt
CVE-2022-31199matches 8 of 8KEV listed · 2022receipt
CVE-2021-35464matches 8 of 8KEV listed · 2021receipt
CVE-2021-42237matches 8 of 8KEV listed · 2021receipt
CVE-2025-23006 · SonicWall SMA1000matches 8 of 9KEV listed · 2025receipt
CVE-2025-26399 · SolarWinds Web Help Deskmatches 8 of 9KEV listed · 2025receipt

"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

3287 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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