CVE-2026-12921
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceAzeoTech DAQFactory versions 21.1 and prior contain a Use After Free vulnerability in the parsing of .ctl files. When a specially crafted .ctl file is opened, the application improperly manages memory during parsing, allowing an attacker to free memory and then access it after it has been freed, leading to arbitrary code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 21.1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Locate DAQFactory installation directoryCheck standard installation paths such as C:\Program Files\AzeoTech\DAQFactory or C:\Program Files (x86)\AzeoTech\DAQFactory, and note the executable file name (typically DAQFactory.exe)Affected if DAQFactory.exe exists on the system
-
Determine installed DAQFactory versionRight-click on DAQFactory.exe, select Properties, then view the Details tab for Version information; alternatively, open DAQFactory and navigate to Help > About to view the version numberAffected if The reported version is 21.1 or any version number lower than 21.1
-
Verify .ctl file format supportConfirm that DAQFactory uses .ctl files as a native project/script format by checking if the application can open or has functionality to import .ctl files (these are control/script files native to DAQFactory)Affected if DAQFactory has the ability to load or parse .ctl files, which is the default behavior for this application
-
Check for presence of .ctl files in working directoriesSearch for .ctl files in user-accessible directories, shared network folders, or recent project locations that DAQFactory might parseAffected if Untrusted or externally sourced .ctl files exist in locations accessible to the DAQFactory process
The environment is affected if DAQFactory version 21.1 or prior is installed and the application can load .ctl files, which is its standard functionality.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade to a version newer than 21.1 when available. Until then, avoid opening .ctl files from untrusted sources and implement endpoint protection to block malicious file execution.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-12921 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-12921 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data