Advisory Details

December 17th, 2025

AzeoTech DAQFactory CTL File Parsing Type Confusion Remote Code Execution Vulnerability

ZDI-25-1134
ZDI-CAN-26883

CVE ID CVE-2025-66586
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS AzeoTech
AFFECTED PRODUCTS DAQFactory
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of AzeoTech DAQFactory. 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 CTL files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS AzeoTech has issued an update to correct this vulnerability. More details can be found at:
https://www.cisa.gov/news-events/ics-advisories/icsa-25-345-03
DISCLOSURE TIMELINE
  • 2025-06-23 - Vulnerability reported to vendor
  • 2025-12-17 - Coordinated public release of advisory
  • 2025-12-17 - Advisory Updated
CREDIT Rocco Calvi (@TecR0c) with TecSecurity
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