CVE-2025-13712
Published: 23 December 2025
Summary
CVE-2025-13712 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Zerodayinitiative (inferred from references). Its CVSS base score is 7.8 (High).
Operationally, ranked in the top 18.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Tencent HunyuanDiT contains a deserialization of untrusted data vulnerability in its merge endpoint that permits remote code execution. The flaw stems from insufficient validation of user-supplied input during deserialization, allowing an attacker to execute arbitrary code with root privileges on affected installations. The issue is tracked as ZDI-CAN-27190 and carries a CVSS 3.0 score of 7.8.
Remote attackers can trigger the vulnerability when a user visits a malicious page or opens a malicious file, resulting in code execution in the root context without additional authentication. The attack vector requires user interaction but needs no privileges on the target system.
A patch addressing the issue is available in the HunyuanDiT repository, and further details are provided in the Zero Day Initiative advisory ZDI-25-1028. The associated EPSS score has remained flat at 0.0155 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-204977
Vulnerability details
Tencent HunyuanDiT merge Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent HunyuanDiT. User interaction is required to exploit this vulnerability in that the target must visit…
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a malicious page or open a malicious file. The specific flaw exists within the merge endpoint. 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 root. Was ZDI-CAN-27190.
- 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.