Actively exploited in the wild
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
SolarWinds - Web Help Desk · Listed in the CISA KEV since 2026-03-09. This indicates confirmed attacks in production environments.
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.
CVE-2025-26399
CriticalCVSS 9.8KEVExploitation Probability (EPSS)
Very high risk100th percentile - higher than 100% of all known CVEs
Summary
SolarWinds Web Help Desk jest podatny na nieautoryzowaną deserializację AjaxProxy, co może prowadzić do zdalnego wykonania kodu. W przypadku wykorzystania tej podatności, atakujący może uruchomić polecenia na maszynie gospodarza. Jest to obejście poprawek dla CVE-2024-28988, które z kolei jest obejściem dla CVE-2024-28986.
Risk Assessment
Wykorzystanie tej podatności może prowadzić do pełnej kontroli nad systemem przez atakującego, co stwarza poważne zagrożenie dla bezpieczeństwa organizacji. Potencjalne skutki obejmują kradzież danych, wprowadzenie złośliwego oprogramowania oraz inne działania mogące zaszkodzić infrastrukturze IT.
Recommendation
Zaleca się natychmiastowe zastosowanie dostępnych poprawek oraz monitorowanie systemów w celu wykrycia nieautoryzowanych działań. Należy również przeprowadzić audyt bezpieczeństwa, aby ocenić potencjalne ryzyko związane z tą podatnością.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

