CASCACascade Atlas

Evidence dossier

CVE-2024-28986

SolarWinds Web Help Desk Java Deserialization Remote Code Execution Vulnerability

82.9–97.9Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Aug 13, 2024
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

FIRST EPSS84.63%

2026-07-18 · v2026.06.15 · percentile 99.7%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

SolarWindsoriginal assertion
container

SolarWinds Web Help Desk Java Deserialization Remote Code Execution Vulnerability

CISA KEVoriginal assertion
observed_exploitation

SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.846280000000; percentile 0.996790000000

Applicability

Cited product scope

Trace impact →
solarwindswebhelpdesk
[{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "12.8.3"}]unknown
SolarWindsWeb Help Desk
[{"status": "affected", "version": "previous versions", "versionType": "12.8.3", "lessThanOrEqual": "12.8.3"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:solarwinds:web_help_desk:*:*:*:*:*:*:*:*; end including 12.8.2supported
Unknown vendorUnknown product
cpe:2.3:a:solarwinds:web_help_desk:12.8.3:-:*:*:*:*:*:*supported

Assessments

CVSS by origin

9.8
psirt@solarwinds.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
SolarWindsCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.