CVE-2025-0556Network attack vector

Command disclosure via unencrypted agent tunnel

Published Feb 12, 2025 · Updated Feb 12, 2025

Cleartext transmission in Progress Telerik Report Server before 2025 Q1 (11.0.25.211) allows attackers to sniff service-agent commands. The older .NET Framework implementation sends non-sensitive commands between the background service agent and application host through an unencrypted tunnel. Exposure requires visibility into that channel; default installations keep both processes on one host, and sensitive customer data is unaffected.

CVSS severity8.8
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Progress Telerik Report Server before 2025 Q1 (11.0.25.211) allows attackers to sniff service-agent commands. The older .NET Framework implementation sends non-sensitive commands between the background service agent and application host through an unencrypted tunnel. Exposure requires visibility into that channel; default installations keep both processes on one host, and sensitive customer data is unaffected.

The record

CVE
CVE-2025-0556
Published
Feb 12, 2025
Updated
Feb 12, 2025
Vendor
Progress Software Corporation
Product
Telerik Report Server
Classifications
CWE-319, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <2025 Q1 (11.0.25.211)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Progress Software Corporation · Telerik Report Serverversion=1.0.0 <2025 Q1 (11.0.25.211)

Published CVSS scores

8.8Progress Software CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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