What is CVE-2025-6811?

CVE-2025-6811 is a critical-severity vulnerability in Mescius Activereports.net, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-07-07.

How severe is CVE-2025-6811?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Mescius Activereports.net

CVE-2025-6811

Mescius ActiveReports.NET TypeResolutionService Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Mescius ActiveReports.NET. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the TypeResolutionService class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25397.

Vulnerability class: Insecure Deserialization

EPSS: 0.007 (50.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mescius Activereports.net — versions 18.1.1

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

zdi-disclosures@trendmicro.com (x_research-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2025-6811?: CVE-2025-6811 is a critical-severity vulnerability in Mescius Activereports.net, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2025-07-07.
How severe is CVE-2025-6811?: Critical severity. CVSS v3 base score is 9.8 out of 10.