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Known exploited vulnerabilities

Ajax.NET Professional vulnerabilities attackers have used

Every Ajax.NET Professional vulnerability in CISA's Known Exploited Vulnerabilities catalog, newest first, with the federal due date and whether it fed ransomware campaigns.

The short answer

CISA lists 1 Ajax.NET Professional vulnerability as exploited in the wild, 1 of them added in the last 12 months. The most recent is CVE-2021-23758, added Aug 26, 2026. Ajax.NET Professional has the most entries (1).

In KEV, all time
1
Added, last 12 months
1
Used in ransomware
0
New CVEs this week
0

Every Ajax.NET Professional entry in CISA KEV

  1. CVE-2021-23758

    Added · due

    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…

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