{"id":"CVE-2021-23758","vendor_project":"Ajax.NET Professional","product":"Ajax.NET Professional","vulnerability_name":"Ajax.NET Professional Deserialization of Untrusted Data Vulnerability","date_added":"2026-08-26","due_date":"2026-09-09","known_ransomware_use":"Unknown","short_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.","required_action":"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.","cwes":"CWE-502","cvss_version":"3.1","cvss_severity":"CRITICAL","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","nvd_published":"2021-12-03","nvd_status":"Analyzed","epss":0.83633,"epss_percentile":0.99675,"cvss_score":9.8,"days_published_to_kev":1727,"source":"https://data.cybermax-tools.workers.dev/cve/CVE-2021-23758","by":"CyberMax"}