ZDI-26-946: (0Day) Meta FAIRChem make_challenge_submission_file NPZ File Parsing Deserialization of Untrusted Data Remote Code Execution Vulnerability
Published Nov 11, 2026
·Updated
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Meta FAIRChem. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8.
Event History
Nov 11, 2026
Advisory Published
via ZDI·06:00 AM
Data Sourced
via ZDI·06:00 AM
Description
Frequently Asked Questions
1
What must an attacker do to exploit this issue?
The attacker must persuade the target to visit a malicious page or open a malicious file. Successful exploitation can result in arbitrary code execution on the affected Meta FAIRChem installation.
2
Is user interaction required?
Yes. The target must visit a malicious page or open a malicious file for exploitation to occur.