CVE-2025-26399

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2025-26399

Confirmed

Yes

2026-03-09 00:00 UTC

Timestamps

2026-03-09

2026-03-09

Scope

KEV entry: SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability | Affected: SolarWinds / Web Help Desk | Description: SolarWinds Web Help Desk contain a deserialization of untrusted data vulnerability in AjaxProxy that could allow an attacker to run commands on the host machine. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-03-12 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.solarwinds.com/trust-center/security-advisories/cve-2025-26399 ; https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix-1_release_notes.htm ; https://nvd.nist.gov/vuln/detail/CVE-2025-26399

References
  • {'id': 'CVE-2025-26399', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-26399'}

3c5da77e-c287-483e-ba60-0b605d3697a8

405284c2-e461-4670-8979-7fd2c9755a60

2026-03-09 20:00 UTC

2026-03-09 20:00 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-502"
  ],
  "date_added": "2026-03-09",
  "due_date": "2026-03-12",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Web Help Desk",
  "vendorProject": "SolarWinds",
  "vulnerabilityName": "SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability"
}
 -
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