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CVE-2019-18935
CRITICAL
CISA KEV
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.)
Published: Dec 11, 2019
Modified: Jun 17, 2026
CWE-502
CWE-502
CVSS Metrics
CVSSv3
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products (1)
| Vendor | Product | Version |
|---|---|---|
| telerik | ui_for_asp.net_ajax | * ≥ 2011.1.315 |
GitHub Security Advisory GHSA-c655-3j45-33xw
Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization...
References (21)
- http://packetstormsecurity.com/files/155720/Telerik-UI-Remote-Code-Execution.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/159653/Telerik-UI-ASP.NET-AJAX-RadAsyncUpload-Deserialization.html Exploit, Third Party Advisory, VDB Entry
- https://codewhitesec.blogspot.com/2019/02/telerik-revisited.html Not Applicable
- https://github.com/bao7uo/RAU_crypto Exploit, Third Party Advisory
- https://github.com/noperator/CVE-2019-18935 Exploit, Third Party Advisory
- https://know.bishopfox.com/research/cve-2019-18935-remote-code-execution-in-telerik-ui Exploit, Third Party Advisory
- https://www.bleepingcomputer.com/news/security/us-federal-agency-hacked-using-old-telerik-bug-to-steal-data/ Press/Media Coverage
- https://www.telerik.com/support/kb/aspnet-ajax/details/allows-javascriptserializer-deserialization Patch, Vendor Advisory
- https://www.telerik.com/support/whats-new/aspnet-ajax/release-history/ui-for-asp-net-ajax-r1-2020-%28version-2020-1-114%29 Release Notes
- https://www.telerik.com/support/whats-new/release-history Release Notes, Vendor Advisory
- http://packetstormsecurity.com/files/155720/Telerik-UI-Remote-Code-Execution.html Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/159653/Telerik-UI-ASP.NET-AJAX-RadAsyncUpload-Deserialization.html Exploit, Third Party Advisory, VDB Entry
- https://codewhitesec.blogspot.com/2019/02/telerik-revisited.html Not Applicable
- https://github.com/bao7uo/RAU_crypto Exploit, Third Party Advisory
- https://github.com/noperator/CVE-2019-18935 Exploit, Third Party Advisory
Risk Scores
CVSS Score
9.8 / 10
EPSS Score
99.74%
Top 0% most likely to be exploited
Threat Score
99.1 / 100
CISA Known Exploited
Date Added:
2021-11-03
Due Date:
2022-05-03
Required Action:
Apply updates per vendor instructions.
Used in Ransomware Campaigns
Data Sources
NVD
CISA KEV
EPSS
GitHub