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    CVE-2025-40551

    SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.

    Published:Jan 28, 2026
    Last Modified:Feb 26, 2026
    EPS:Jan 28, 2026
    EPSS Score:0.78626
    CVSS Score:9.8

    CISA Notification

    Description

    SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.

    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
    Feb 6, 2026
    217 days ago
    Alert Date
    Feb 3, 2026
    220 days ago

    Affected Products

    Vendor
    Solarwinds
    Product
    Web Help Desk

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

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    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-2025-40537 (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-2025-26399 (CVSS 9.8) — SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote co…
    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