Is CVE-2019-18935 actively exploited?

Yes. CVE-2019-18935 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2019-18935 be exploited remotely?

The attack vector of CVE-2019-18935 has not been classified yet.

What is the CVSS score of CVE-2019-18935?

CVE-2019-18935 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2019-18935

HIGHCISA KEVIN THE WILD

CVE-2019-18935

Published: November 3, 2021

EPSS:93.58%probability of exploitation in 30 daysPercentile:99.8th

Official Description

Progress Telerik UI for ASP.NET AJAX contains a deserialization of untrusted data vulnerability through RadAsyncUpload which leads to code execution on the server in the context of the w3wp.exe process.

NVD Source

CISA KEV Advisory

Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data Vulnerability

Added to KEV: 2021-11-03Federal patch deadline: 2022-05-03⚠ USED IN RANSOMWARE CAMPAIGNS

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

Progress Telerik UI for ASP.NET AJAX contains a deserialization vulnerability in RadAsyncUpload, allowing code execution on the server within the w3wp.exe process. With an EPSS score of 0.93583 and inclusion in CISA's KEV, this vulnerability is highly likely to be exploited and is actively targeted.

This vulnerability has been observed under active exploitation in the wild. The flaw is remotely exploitable, leading to server-side code execution.

Recommended Action

Update Progress Telerik UI for ASP.NET AJAX to a patched version. Implement input validation and secure deserialization practices.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2019-18935 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2019-18935 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.