CVE-2025-26399

Summary

SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.

Affected Software

Weaknesses

• CWE-502: CWE-502: Deserialization of Untrusted Data

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: active
  • Automatable: yes
  • Technical Impact: total

Additional References

• https://www.microsoft.com/en-us/security/blog/2026/02/06/active-exploitation-solarwinds-web-help-desk/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-26399

References

• 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

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