CVE-2021-23758

Ajax.NET Professional Deserialization of Untrusted Data Vulnerability
82.6%
EPSS
100%
Percentile
Yes
Known exploited
0
APAC news · 90d
Summary

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.

Vendor
Ajax.NET Professional
Product
Ajax.NET Professional
Added to KEV
Aug 26, 2026
Remediation due
Sep 9, 2026 (US federal deadline)
Ransomware use
Not known
Weakness
CWE-502
EPSS
82.6% as of Nov 12
In the news
  • No Asia-Pacific article names this CVE yet.
Linked
Actors named alongside it:
none
Incidents exploiting it:
  • none recorded