$ cve CVE-2019-18935 JSON

CVE-2019-18935 KEV EXPLOIT

9.8

CRITICAL · CVSS 3.1 · EPSS 99.7% (pctl 100)

Patch first

On CISA KEV — known exploited in the wild, due 2022-05-03.

Description

Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. Exploitation can result in remote code execution. (As of 2020.1.114, a default setting prevents the exploit. In 2019.3.1023, but not earlier versions, a non-default setting can prevent exploitation.)

Scoring

CVSS	9.8 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	99.74% — more likely to be exploited than 100% of all CVEs
Weakness	CWE-502
On CISA KEV	yes — remediate by 2022-05-03
Public exploit	yes
Published	2019-12-11
Last modified	2026-06-17

CISA KEV

Name	Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data Vulnerability
Added	2021-11-03
Due	2022-05-03
Vendor / product	Progress / Telerik UI for ASP.NET AJAX
Ransomware use	known

Affected (1)

Vendor	Product
telerik	ui for asp.net ajax

Public exploits

Source	Title	Date
exploit-db	Telerik UI - Remote Code Execution via Insecure Deserialization	2019-12-18

References

→ the Explorer · watch your stack · NVD