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CVE-2024-28986

INDEX BUILT · 2026-09-20

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SolarWinds Web Help Desk Java Deserialization Remote Code Execution Vulnerability

CVE-2024-289864 of 4 sources documented this
80

rank 80 = 40 + 25 + 5 + 4 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.84628 · CISA KEV listed  ·  without this subject the record ranks 40

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from the CNA  ·  without this subject the record ranks 55

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-01-01  ·  without this subject the record ranks 75

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 76

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 74

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.22Mover the next 30 days, if this record is yours
Movement+$1.82Mon 2026-01-01, the last material move, 8 months before this reading
Basisassumeda published average, not your estate

$4.22M = $4.99M incident cost x 1 exposure x 0.84628 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

0.84628EPSSKEV · LISTED
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-04-06, 151 days at 0.85, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

SolarWinds WebCVE-2023-43208CVE-2022-31199CVE-2021-35464CVE-2021-42237SonicWall SMA100028986

This record is one instance of CWE-502, deserialization of untrusted data. The index holds 3288 prior instances of this class, 76 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-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 useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed inNo fix version in held sources, as the index stood on 4 Sep 2026.
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 2024-09-05receipt
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEV2 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2024-08-15.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed2024-08-15receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA9.8 CRITICALreceipt
Exploit probability0.84628 · top 0.31% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bySolarWindsreceipt
Recorded changes68 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Affected productSolarWinds Web Help Deskreceipt
Published rangessolarwinds web help desk <= 12.8.2; solarwinds web help desk 12.8.3receipt

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 interactionCISA KEV listingadded 08-15 · due 09-05SolarWinds Web Help DeskCWE-502 deserialization of untrus…Full compromise (C/I/A)C:H / I:H / A:Hmandates remediationexploits CWE-502data compromise

What it is stated by the CNA

SolarWinds Web Help Desk was found to be susceptible to a Java Deserialization Remote Code Execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. While it was reported as an unauthenticated vulnerability, SolarWinds has been unable to reproduce it without authentication after thorough testing.   However, out of an abundance of caution, we recommend all Web Help Desk customers apply the patch, which is now available. receipt

NVD's analysis a second authority

weakness
CWE-502
affected versions
solarwinds web help desk <= 12.8.2; solarwinds web help desk 12.8.3
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 solarwinds.com support.solarwinds.com receipt

Dated events

2024-08-15Added to CISA KEV2024-09-05CISA remediation due2025-03-17EPSS moved 0.03 to 0.462026-03-21EPSS moved 0.78 to 0.70

Movement the material steps

14 Aug 20240.00071
17 Mar 20250.45928 · crossed 0.10 · scoring model v2025.03.14
19 Mar 20250.8055 · crossed 0.50
20 Mar 20250.45928 · crossed 0.50
27 Mar 20250.8055 · crossed 0.50
28 Mar 20250.45928 · crossed 0.50
29 Mar 20250.8055 · crossed 0.50
30 Mar 20250.45928 · crossed 0.50
15 Apr 20250.21563
29 Apr 20250.3262
21 Sep 20250.42795
22 Sep 20250.5233 · crossed 0.50
21 Oct 20250.49683 · crossed 0.50
22 Oct 20250.50224 · crossed 0.50
28 Oct 20250.39344 · crossed 0.50
18 Nov 20250.25589
21 Nov 20250.45103
1 Jan 20260.81538 · crossed 0.50
21 Mar 20260.69662
5 May 20260.80113
15 Jun 20260.84446 · scoring model v2026.06.15
26 Jun 20260.84628

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

Show all 57 observations
14 Aug 20240.00071
16 Aug 20240.01873
17 Aug 20240.02983
15 Oct 20240.02618
18 Feb 20250.02953
17 Mar 20250.45928
19 Mar 20250.8055
20 Mar 20250.45928
27 Mar 20250.8055
28 Mar 20250.45928
29 Mar 20250.8055
30 Mar 20250.45928
15 Apr 20250.21563
29 Apr 20250.3262
16 Aug 20250.34306
26 Aug 20250.29909
21 Sep 20250.42795
22 Sep 20250.5233
27 Sep 20250.55302
1 Oct 20250.55862
14 Oct 20250.52713
21 Oct 20250.49683
22 Oct 20250.50224
28 Oct 20250.39344
30 Oct 20250.38761
18 Nov 20250.25589
21 Nov 20250.45103
18 Dec 20250.45695
31 Dec 20250.45103
1 Jan 20260.81538
18 Jan 20260.79615
19 Jan 20260.80592
30 Jan 20260.83236
1 Feb 20260.82058
2 Feb 20260.84191
18 Feb 20260.73556
21 Feb 20260.75126
2 Mar 20260.75243
4 Mar 20260.76596
6 Mar 20260.78433
21 Mar 20260.69662
22 Mar 20260.7117
3 Apr 20260.71306
5 Apr 20260.72885
6 Apr 20260.75043
17 Apr 20260.7692
3 May 20260.78637
5 May 20260.80113
7 May 20260.79729
13 May 20260.81111
22 May 20260.7955
1 Jun 20260.79939
4 Jun 20260.81462
9 Jun 20260.81661
10 Jun 20260.80241
15 Jun 20260.84446
26 Jun 20260.84628

57 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 0.84628Published2024-08-13CISA KEV2024-08-15Index as of2026-09-04

Listed by CISA 2 days after it published, exploit probability more than doubled between 2024-08-14 and 2024-08-16 (0.00071 → 0.01873) and the record had been public for 2 years when this index was last written.

No material movement in 70 days as of the last ingest this index recorded.

Published 2024-08-13 receipt · CISA KEV 2024-08-15 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 3288 prior instances of this class, 76 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2025-26399 · SolarWinds Web Help Deskmatches 9 of 9KEV listed · 2025receipt
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

"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

3288 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

Its defect family

solarwinds web help desk

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: held values

Nothing we hold separates this record from the others in its defect family. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

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What usually comes next

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