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    CVE-2025-26399

    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.

    Published:Sep 23, 2025
    Last Modified:Mar 10, 2026
    EPS:Sep 23, 2025
    EPSS Score:0.34225
    CVSS Score:9.8

    CISA Notification

    Description

    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.

    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.

    Notes:

    No extra notes provided.

    Due Date
    Mar 12, 2026
    183 days ago
    Alert Date
    Mar 9, 2026
    186 days ago

    Affected Products

    Vendor
    Solarwinds
    Product
    Web Help Desk

    Exploits

    https://github.com/h4xnz/CVE-2025-26399-Exploithttps://github.com/rxerium/CVE-2025-26399

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

    CVE-2026-28323 (CVSS 9.8) — SolarWinds Web Help Desk is found to be affected by a SAML authentication bypass vulnerability. This requires …
    CVE-2026-28299 (CVSS 8.2) — SolarWinds Web Help Desk is found to be affected by a denial-of-service vulnerability, which when exploited, c…
    CVE-2025-40554 (CVSS 9.8) — SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that, if exploi…
    CVE-2025-40553 (CVSS 9.8) — SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that c…
    CVE-2025-40552 (CVSS 9.8) — SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that if exploit…
    CVE-2025-40551 (CVSS 9.8) — SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that c…
    CVE-2025-40537 (CVSS 7.5) — SolarWinds Web Help Desk was found to be susceptible to a hardcoded credentials vulnerability that, under cert…
    CVE-2025-40536 (CVSS 8.1) — SolarWinds Web Help Desk was found to be susceptible to a security control bypass vulnerability that if exploi…
    CVE-2024-28988 (CVSS 9.8) — SolarWinds Web Help Desk was found to be susceptible to a Java Deserialization Remote Code Execution vulnerabi…
    CVE-2025-26400 (CVSS 5.3) — SolarWinds Web Help Desk was reported to be affected by an XML External Entity Injection (XXE) vulnerability t…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High