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

High 8.8 Published Updated

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

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
None listed

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

Which versions are affected by CVE-2025-0556?

It affects 1 product.

Products include 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.

Sources

Also known as GHSA-j8rc-g3xr-w3p5.

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