How severe is CVE-2021-42543?

CVE-2021-42543 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-42543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42543?

CVE-2021-42543 primarily affects Azeotech Daqfactory. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-42543?

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.

When was CVE-2021-42543 published?

CVE-2021-42543 was published on 2021-11-05 and last updated on 2026-06-17.

CVE-2021-42543

CVE-2021-42543 is a high-severity vulnerability in Azeotech Daqfactory with a CVSS 3.x base score of 7.8. 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-242.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-242
Affected product: Azeotech Daqfactory
Published: 2021-11-05
Last modified: 2026-06-17

Description

The affected application uses specific functions that could be abused through a crafted project file, which could lead to code execution, system reboot, and system shutdown.

Frequently asked questions

What is CVE-2021-42543?: The affected application uses specific functions that could be abused through a crafted project file, which could lead to code execution, system reboot, and system shutdown.
How severe is CVE-2021-42543?: CVE-2021-42543 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-42543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42543?: CVE-2021-42543 primarily affects Azeotech Daqfactory. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-42543?: 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.
When was CVE-2021-42543 published?: CVE-2021-42543 was published on 2021-11-05 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-308-02

Affected products (2)

cpe:2.3:a:azeotech:daqfactory:*:*:*:*:*:*:*:*
cpe:2.3:a:azeotech:daqfactory:18.1:build_2347:*:*:*:*:*:*

More vulnerabilities in Azeotech Daqfactory

CVE-2011-3492 — Critical (CVSS 10.0): Stack-based buffer overflow in Azeotech DAQFactory 5.85 build 1853 and earlier allows remote attackers to cause a…
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