Advisory Details

December 1st, 2025

Tencent HunyuanDiT merge Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-25-1028
ZDI-CAN-27190

CVE ID CVE-2025-13712
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Tencent
AFFECTED PRODUCTS HunyuanDiT
VULNERABILITY DETAILS

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 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.

ADDITIONAL DETAILS Tencent has issued an update to correct this vulnerability. More details can be found at:
https://github.com/Tencent-Hunyuan/HunyuanDiT/commit/d2cb9cde5c9dc6a6c01735dcb92fe7699ddf6bc5
DISCLOSURE TIMELINE
  • 2025-05-22 - Vulnerability reported to vendor
  • 2025-12-01 - Coordinated public release of advisory
  • 2025-12-01 - Advisory Updated
CREDIT Peter Girnus (@gothburz) of Trend Zero Day Initiative
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