# CVE-2017-11357: Telerik UI for ASP.NET AJAX Insecure Direct Object Reference

> Remote attackers can upload arbitrary files and execute code via the RadAsyncUpload control in Progress Telerik UI for ASP.NET AJAX.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 26 Jan 2023 (CISA KEV), used in ransomware
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Aug 2017
- **Updated:** 14 Aug 2026
- **Also known as:** GHSA-52hx-8455-4qwv

## What is CVE-2017-11357?

CVE-2017-11357 is a critical vulnerability in n/a, published on 23 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2017-11357?

It affects 1 product.


Products: Progress Telerik Ui for Asp.net Ajax.

## How do I fix CVE-2017-11357?

No fix has been published for CVE-2017-11357 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 16 Feb 2023.

## Is CVE-2017-11357 being exploited?

Yes. Attackers have exploited CVE-2017-11357 in the wild since at least 26 Jan 2023, including in ransomware campaigns.

Public exploit code:

- Telerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Arbitrary File Upload (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2021-28141](https://insights.sbomify.com/CVE-2021-28141/): Missing authorization in n/a (critical 9.8)
- [CVE-2019-19790](https://insights.sbomify.com/CVE-2019-19790/): Path traversal in n/a (critical 9.8)
- [CVE-2026-13181](https://insights.sbomify.com/CVE-2026-13181/): RadAsyncUpload AsyncUploadTypeName Type Resolution Vulnerability in Telerik UI for ASP.NET AJAX (high 8.1)
- [CVE-2026-13185](https://insights.sbomify.com/CVE-2026-13185/): PersistenceFramework Cookie Deserialization Vulnerability in Telerik UI for ASP.NET AJAX (high 8.1)
- [CVE-2026-13186](https://insights.sbomify.com/CVE-2026-13186/): AppDataStorageProvider Path Traversal Deserialization Vulnerability in Telerik UI for ASP.NET AJAX (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-11357 and fix it if it is affected.

What it is: CVE-2017-11357 is a critical vulnerability in n/a, published on 23 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2017-11357 in the wild since at least 26 Jan 2023, including in ransomware campaigns.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2017-11357/ (Markdown: https://insights.sbomify.com/CVE-2017-11357/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-11357
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-11357
- OSV: https://osv.dev/vulnerability/CVE-2017-11357

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-11357/
Summaries are generated and may contain mistakes; the official description above is the record.