cve-2021-23758

{
  "cvss": 8.1,
  "datePublished": "2026-08-20T00:00:00Z",
  "dateUpdated": "2026-08-20T00:00:00Z",
  "description": "Ajax.NET Professional (AjaxPro) contains a deserialization of untrusted data vulnerability that could allow for remote code execution via arbitrary .NET classes. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.",
  "dueDate": "2026-09-09T00:00:00Z",
  "id": "CVE-2021-23758",
  "kev_catalogs": [
    "vulncheck"
  ],
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Ajax.NET Professional",
  "requiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
  "severity": "HIGH",
  "source": "vulncheck_kev",
  "title": "Ajax.NET Professional Deserialization of Untrusted Data Vulnerability",
  "vendor": "Ajax.NET Professional"
}