Vulnerability database

1 result

• Aug 26, 2026Ajax.NET Professional Deserialization of Untrusted Data VulnerabilityCVE-2021-23758 · Other software · Ajax.NET Professional · reported by report@snyk.ioExploitedHigh 8.1

  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.

  Product

  Ajax.NET Professional

  On CISA’s list since

  Aug 26, 2026 (federal fix deadline Sep 9, 2026)

  What to do

  Attackers are using this now. Install Ajax.NET Professional’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.

  Full record and what to do →NVD recordCISA catalogpacketstormsecurity.comgithub.com

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.