CVE-2025-26399: CWE-502: Deserialization of Untrusted Data in SolarWinds Web Help Desk
SolarWinds Web Help Desk contains a critical unauthenticated deserialization vulnerability (CVE-2025-26399) that allows remote code execution via the AjaxProxy component. This vulnerability bypasses previous patches for related CVEs (2024-28988 and 2024-28986). It affects versions up to and including 12.8.7. The vulnerability has a CVSS score of 9.8, indicating a high risk of full system compromise without any required privileges or user interaction.
AI Analysis
Technical Summary
CVE-2025-26399 is a critical remote code execution vulnerability in SolarWinds Web Help Desk caused by unsafe deserialization of untrusted data in the AjaxProxy component. It allows an unauthenticated attacker to execute arbitrary commands on the host system. This issue is a patch bypass of two previous vulnerabilities (CVE-2024-28988 and CVE-2024-28986), indicating that prior fixes were circumvented. The vulnerability affects all versions up to and including 12.8.7. No official patch or remediation details are provided in the available data.
Potential Impact
Successful exploitation results in unauthenticated remote code execution with full control over the affected host, leading to complete confidentiality, integrity, and availability compromise. Given the critical CVSS score of 9.8, the impact includes potential full system takeover without any user interaction or privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or official fixes are provided, users should monitor SolarWinds advisories closely for updates. Until a fix is available, restricting network access to the Web Help Desk application and employing compensating controls to limit exposure is advisable.
CVE-2025-26399: CWE-502: Deserialization of Untrusted Data in SolarWinds Web Help Desk
Description
SolarWinds Web Help Desk contains a critical unauthenticated deserialization vulnerability (CVE-2025-26399) that allows remote code execution via the AjaxProxy component. This vulnerability bypasses previous patches for related CVEs (2024-28988 and 2024-28986). It affects versions up to and including 12.8.7. The vulnerability has a CVSS score of 9.8, indicating a high risk of full system compromise without any required privileges or user interaction.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-26399 is a critical remote code execution vulnerability in SolarWinds Web Help Desk caused by unsafe deserialization of untrusted data in the AjaxProxy component. It allows an unauthenticated attacker to execute arbitrary commands on the host system. This issue is a patch bypass of two previous vulnerabilities (CVE-2024-28988 and CVE-2024-28986), indicating that prior fixes were circumvented. The vulnerability affects all versions up to and including 12.8.7. No official patch or remediation details are provided in the available data.
Potential Impact
Successful exploitation results in unauthenticated remote code execution with full control over the affected host, leading to complete confidentiality, integrity, and availability compromise. Given the critical CVSS score of 9.8, the impact includes potential full system takeover without any user interaction or privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or official fixes are provided, users should monitor SolarWinds advisories closely for updates. Until a fix is available, restricting network access to the Web Help Desk application and employing compensating controls to limit exposure is advisable.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- SolarWinds
- Date Reserved
- 2025-02-08T00:19:09.395Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 68d22c2079681e6adcf142e8
Added to database: 09/23/2025, 05:12:00 UTC
Last enriched: 06/16/2026, 07:30:08 UTC
Last updated: 07/01/2026, 12:31:22 UTC
Views: 664
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