How severe is CVE-2025-0556?

CVE-2025-0556 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-0556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-0556?

CVE-2025-0556 affects Progress Telerik Report Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-0556?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-0556 have an EU (EUVD) identifier?

Yes. CVE-2025-0556 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1753.

When was CVE-2025-0556 published?

CVE-2025-0556 was published on 2025-02-12 and last updated on 2026-06-17.

CVE-2025-0556

CVE-2025-0556 is a high-severity vulnerability in Progress Telerik Report Server with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-1753
Weakness: CWE-319
Affected product: Progress Telerik Report Server
Published: 2025-02-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-0556?: 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.
How severe is CVE-2025-0556?: CVE-2025-0556 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-0556 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-0556?: CVE-2025-0556 affects Progress Telerik Report Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-0556?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-0556 have an EU (EUVD) identifier?: Yes. CVE-2025-0556 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-1753.
When was CVE-2025-0556 published?: CVE-2025-0556 was published on 2025-02-12 and last updated on 2026-06-17.

References

https://docs.telerik.com/report-server/knowledge-base/kb-security-cleartext-transmission-cve-2025-0556

Affected products (1)

cpe:2.3:a:progress:telerik_report_server:*:*:*:*:*:*:*:*

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