Cyber Resilience

CVE-2026-12921

High

Published: 25 June 2026

Published
25 June 2026
Modified
25 June 2026
KEV Added
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Patch
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CVSS Score v4 8.4 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0014 3.8th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-12921 is a high-severity Use After Free (CWE-416) vulnerability. Its CVSS base score is 8.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked at the 3.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

In AzeoTech DAQFactory versions 21.1 and prior, a Use After Free vulnerability can be exploited by an attacker using specially crafted .ctl files which can result in code execution.

CWE(s)
CWE-416

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1204.002 Malicious File Execution
An adversary may rely upon a user opening a malicious file in order to gain execution.
attack.mitre.org →
Why these techniques?

UAF in file parser enables client-side code execution via malicious .ctl file (T1203/T1204.002).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

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In AzeoTech DAQFactory
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-416

Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.

References