CVE-2021-23758 - 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.
- Severity
- critical
- Product
- Ajax.NET Professional Ajax.NET Professional
- Published
- 2026-08-26
- EPSS
- 0.826
- CISA KEV
- Known exploited
- Ransomware
- Known campaign use
References and validation
- https://github.com/search?q=CVE-2021-23758&type=repositories
- https://nvd.nist.gov/vuln/detail/CVE-2021-23758
Entries are refreshed from CISA KEV and FIRST EPSS. Validate applicability before testing.