CRITICALCVSS v3.1 9.8Actively exploited · CISA KEV since 2021-11-03Vulnerability

CVE-2019-18935

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.

Properties

Vulnerability name
Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data Vulnerability
First seen
2025-10-21T23:35:56+00:00
Cvss score
9.8
Epss score
0.99737
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-05-03
Euvd assigner
mitre
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2021-11-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2021-11-03
Score
9.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor project
Progress

Related Entities (7)

MENTIONED_IN (3)

→[Campaign]2026 Third Quarter Windows Web Server Targeted Malware Statistics Report
→[Campaign]Telerik UI Exploitation Leads to Webshell Install and Scanner Execution
→[Campaign]Chinese-speaking adversary integrates agentic AI into post-compromise operations

AFFECTS_PRODUCT (1)

→[Product]cpe:2.3:a:telerik:ui_for_asp.net_ajax:*:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Deserialization of Untrusted Data

INVOLVES (1)

←[Signal]kev_added · 2021-11-03

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CVE-2019-18935 (CVSS v3.1 9.8) — Ninja Signal Threat Intelligence | Ninja Signal