Deserialization RCE in Tencent HunyuanDiT Merge Endpoint

Publication date: 2025-12-23

Last updated on: 2025-12-23

Assigner: Zero Day Initiative

Description

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 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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-12-23

Last Modified

2025-12-23

Generated

2026-07-06

AI Q&A

2025-12-24

EPSS Evaluated

2026-07-05

NVD

CVE-2025-13712

Affected Vendors & Products

Vendor	Product	Version / Range
tencent	hunyuan	3.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-502	The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

Executive Summary

This vulnerability is a remote code execution flaw in Tencent HunyuanDiT's merge endpoint caused by improper validation of user-supplied data leading to deserialization of untrusted data. An attacker can exploit this by tricking a user into visiting a malicious page or opening a malicious file, allowing the attacker to execute arbitrary code with root privileges.

Impact Analysis

If exploited, this vulnerability allows an attacker to execute arbitrary code on the affected system with root-level privileges, potentially leading to full system compromise, data theft, or disruption of services.

Mitigation Strategies

To mitigate this vulnerability, avoid visiting untrusted web pages or opening untrusted files that could exploit the merge endpoint. Ensure that user-supplied data is properly validated before processing. Apply any available patches or updates from Tencent for HunyuanDiT to fix the deserialization flaw.

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