CVE-2025-6811 — CRITICAL (9.8)

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mescius	Activereports.Net	18.1.1

Related Weaknesses (CWE)

CWE-502

References

https://www.zerodayinitiative.com/advisories/ZDI-25-449/Third Party Advisory

FAQ

What is CVE-2025-6811?

CVE-2025-6811 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Mescius ActiveReports.NET TypeResolutionService Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected ...

How severe is CVE-2025-6811?

CVE-2025-6811 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-6811?

Check the references section above for vendor advisories and patch information. Affected products include: Mescius Activereports.Net.