Advisory Details

October 1st, 2025

Fuji Electric FRENIC-Loader 4 EXTBM File Parsing Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-25-924
ZDI-CAN-26504

CVE ID CVE-2025-9365
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Fuji Electric
AFFECTED PRODUCTS FRENIC-Loader 4
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fuji Electric FRENIC-Loader 4. 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 parsing of EXTBM files. 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.

ADDITIONAL DETAILS Fuji Electric has issued an update to correct this vulnerability. More details can be found at:
https://www.cisa.gov/news-events/ics-advisories/icsa-25-245-02
DISCLOSURE TIMELINE
  • 2025-07-08 - Vulnerability reported to vendor
  • 2025-10-01 - Coordinated public release of advisory
  • 2025-10-01 - Advisory Updated
CREDIT kimiya
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