How severe is CVE-2026-12921?

CVE-2026-12921 has a CVSS 4.0 base score of 8.4, rated high severity.

Is CVE-2026-12921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-12921?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-12921 have an EU (EUVD) identifier?

Yes. CVE-2026-12921 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39513.

When was CVE-2026-12921 published?

CVE-2026-12921 was published on 2026-06-25.

CVE-2026-12921

CVE-2026-12921 is a high-severity vulnerability with a CVSS 4.0 base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 4.0 base score 8.4)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39513
Weakness: CWE-416
Published: 2026-06-25
Last modified: 2026-06-25

Description

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.

Frequently asked questions

What is CVE-2026-12921?: 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.
How severe is CVE-2026-12921?: CVE-2026-12921 has a CVSS 4.0 base score of 8.4, rated high severity.
Is CVE-2026-12921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-12921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-12921 have an EU (EUVD) identifier?: Yes. CVE-2026-12921 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39513.
When was CVE-2026-12921 published?: CVE-2026-12921 was published on 2026-06-25.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-02

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CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
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