# CVE-2017-11317: Telerik UI for ASP.NET AJAX Unrestricted File Upload

> Weak encryption in Telerik UI for ASP.NET AJAX allows remote attackers to upload arbitrary files and execute code.

- **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 11 Apr 2022 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Aug 2017
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-9v96-j7x8-6wjv

## What is CVE-2017-11317?

CVE-2017-11317 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

Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX before R1 2017 and R2 before R2 2017 SP2 uses weak RadAsyncUpload encryption, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

Weakness: CWE-326 (Inadequate Encryption Strength)

## Which versions are affected by CVE-2017-11317?

It affects 1 product.


Products: Telerik Ui for Asp.net Ajax.

## How do I fix CVE-2017-11317?

No fix has been published for CVE-2017-11317 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 2 May 2022.

## Is CVE-2017-11317 being exploited?

Yes. Attackers have exploited CVE-2017-11317 in the wild since at least 11 Apr 2022.

Public exploit code:

- Telerik UI for ASP.NET AJAX File upload and .NET deserialisation exploit (CVE-2017-11317, CVE-2017-11357, CVE-2019-18935) (github_poc): https://github.com/bao7uo/RAU_crypto
- Unrestricted File Upload by Weak Encryption affected versions (CVE-2017-11317) 2. Remote Code Execution by Insecure Deserialization - (CVE-2019-18935) (github_poc): https://github.com/KasunPriyashan/Telerik-UI-ASP.NET-AJAX-Exploitation
- https://github.com/0xr2r/CVE-2017-11317-auto-exploit- (github_poc): https://github.com/0xr2r/CVE-2017-11317-auto-exploit-
- Telerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Arbitrary File Upload (exploitdb)
- Telerik UI ASP.NET AJAX RadAsyncUpload Deserialization (metasploit)

## Other vulnerabilities in n/a

- [CVE-2019-18935](https://insights.sbomify.com/CVE-2019-18935/): Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-11317 and fix it if it is affected.

What it is: CVE-2017-11317 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-2017-11317 in the wild since at least 11 Apr 2022.

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-2017-11317/ (Markdown: https://insights.sbomify.com/CVE-2017-11317/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-11317
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-11317
- OSV: https://osv.dev/vulnerability/CVE-2017-11317

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-11317/
Summaries are generated and may contain mistakes; the official description above is the record.