CISA KEV: CVE-2021-23758 — Ajax.NET Professional Ajax.NET Professional actively exploited

Ajax.NET Professional Deserialization of Untrusted Data Vulnerability. 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. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s B