High

Use-After-Free in AzeoTech DAQFactory .ctl File Parsing

IdentifiersCVE-2025-66585CWE-416· Use After Free

CVE-2025-66585 is a use-after-free vulnerability in AzeoTech DAQFactory release 20.7 (Build 2555), and according to the broader advisory context, affects release 20.7 and prior. The flaw is triggered while DAQFactory parses a specially crafted .ctl file, leading to a stale pointer dereference after memory has been freed. This can corrupt process memory and destabilize the application. In the documented exploitation scenario, a malicious .ctl file is supplied to the target system and processed by DAQFactory, which may allow attacker-controlled code execution in the context of the current process.

For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can cause memory corruption and application instability, including crashes. More seriously, the vulnerability may permit arbitrary code execution in the security context of the DAQFactory process. Based on the advisory context for this vulnerability set, exploitation may also contribute to information disclosure depending on runtime conditions, but the primary documented impact for this CVE is memory corruption with possible code execution.

Mitigation

If you can’t patch tonight, do this now.

Until remediation is fully deployed, restrict access to .ctl files and only allow trusted, validated project/control files to be opened in DAQFactory. Use DAQFactory safe mode where applicable, apply document editing passwords as recommended in the advisory context, and limit local file-ingest paths. From the CISA guidance in the provided content, minimize network exposure of ICS systems, place control systems behind firewalls, isolate them from business networks, and secure remote access through VPNs and other hardened access controls.

Remediation

Patch, then assume compromise.

Upgrade AzeoTech DAQFactory to version 21.1, which the advisory states addresses these vulnerabilities. In addition, organizations should avoid opening or parsing untrusted .ctl files on affected installations and replace or retire vulnerable release 20.7 (Build 2555) and prior where applicable.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

AzeotechDaqfactoryapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

3 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

3 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

The version that knows your environment.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2