# CVE-2025-0556: Telerik Report Server Clear Text Transmission of Agent Commands

> Attackers can sniff local network traffic to read unencrypted agent commands in Telerik Report Server using the older .NET Framework implementation.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 12 Feb 2025
- **Updated:** 12 Feb 2025
- **Also known as:** GHSA-j8rc-g3xr-w3p5

## What is CVE-2025-0556?

CVE-2025-0556 is a high-severity vulnerability in Progress Software Telerik Report Server, published on 12 Feb 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

In Progress® Telerik® Report Server, versions prior to 2025 Q1 (11.0.25.211) when using the older .NET Framework implementation, communication of non-sensitive information between the service agent process and app host process occurs over an unencrypted tunnel, which can be subjected to local network traffic sniffing.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2025-0556?

It affects 1 product.


Products: Progress Telerik Report Server.

## How do I fix CVE-2025-0556?

No fix has been published for CVE-2025-0556 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-0556 being exploited?

There is no known exploitation of CVE-2025-0556 in the wild and no public exploit code.

## Other vulnerabilities in Progress Software Telerik Report Server

- [CVE-2024-6327](https://insights.sbomify.com/CVE-2024-6327/): Progress Telerik Report Server Deserialization (critical 9.9)
- [CVE-2024-1800](https://insights.sbomify.com/CVE-2024-1800/): Progress Telerik Report Server Deserialization (critical 9.9)
- [CVE-2024-8015](https://insights.sbomify.com/CVE-2024-8015/): Telerik Report Server Insecure Type Resolution (critical 9.1)
- [CVE-2024-7292](https://insights.sbomify.com/CVE-2024-7292/): Account Controller allows high count of login attempts (high 7.5)
- [CVE-2024-7295](https://insights.sbomify.com/CVE-2024-7295/): Hard-coded credentials used for temporary and cache data encryption (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-0556 and fix it if it is affected.

What it is: CVE-2025-0556 is a high-severity vulnerability in Progress Software Telerik Report Server, published on 12 Feb 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-0556 in the wild and no public exploit code.

Affected product: Progress Software Telerik Report Server. 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-2025-0556/ (Markdown: https://insights.sbomify.com/CVE-2025-0556/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-0556
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-0556
- OSV: https://osv.dev/vulnerability/CVE-2025-0556

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-0556/
Summaries are generated and may contain mistakes; the official description above is the record.