CVE-2025-6810
Published: 07 July 2025
Summary
CVE-2025-6810 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Mescius Activereports.Net. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 14.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The vulnerability CVE-2025-6810 is a deserialization of untrusted data flaw in the ReadValue method of Mescius ActiveReports.NET. It affects installations of this library and stems from insufficient validation of user-supplied data, enabling remote code execution. The issue carries a CVSS score of 9.8 and was previously tracked as ZDI-CAN-25246 under CWE-502.
Remote attackers can exploit the flaw without authentication or user interaction by supplying crafted input that triggers unsafe deserialization during ReadValue processing. Successful exploitation grants arbitrary code execution in the context of the affected process, though the precise attack vector depends on how the library is integrated into an application.
The associated Zero Day Initiative advisory at https://www.zerodayinitiative.com/advisories/ZDI-25-448/ documents the vulnerability but does not detail specific patches or mitigation steps in the available information. The EPSS score has remained flat at 0.0262 with no material increase observed.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-20245
Vulnerability details
Mescius ActiveReports.NET ReadValue 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…
more
vary depending on the implementation. The specific flaw exists within the implementation of the ReadValue method. 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-25246.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.
Evaluation of untrusted data handling (deserialization testing) reveals unsafe processing, which the required remediation process addresses.
Untrusted serialized data can be deserialized and observed inside the chamber, blocking gadget-chain exploitation outside the sandbox.
Validates or rejects untrusted serialized data before deserialization occurs.
Identifies and blocks malicious code introduced through deserialization of untrusted data at system boundaries.
Integrity verification of serialized information can detect tampering before deserialization occurs.
Provenance of associated data allows detection of untrusted sources before deserialization or processing occurs.