How severe is CVE-2021-42698?

CVE-2021-42698 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-2021-42698 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42698?

CVE-2021-42698 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-2021-42698?

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-2021-42698 published?

CVE-2021-42698 was published on 2021-11-05 and last updated on 2026-06-17.

CVE-2021-42698

CVE-2021-42698 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-502.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Azeotech Daqfactory
Published: 2021-11-05
Last modified: 2026-06-17

Description

Project files are stored memory objects in the form of binary serialized data that can later be read and deserialized again to instantiate the original objects in memory. Malicious manipulation of these files may allow an attacker to corrupt memory.

Frequently asked questions

What is CVE-2021-42698?: Project files are stored memory objects in the form of binary serialized data that can later be read and deserialized again to instantiate the original objects in memory. Malicious manipulation of these files may allow an attacker to corrupt memory.
How severe is CVE-2021-42698?: CVE-2021-42698 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-2021-42698 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42698?: CVE-2021-42698 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-2021-42698?: 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-2021-42698 published?: CVE-2021-42698 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…
CVE-2009-4480 — Critical (CVSS 9.3): Buffer overflow in the web service in AzeoTech DAQFactory 5.77 might allow remote attackers to execute arbitrary code…
CVE-2025-66589 — Critical (CVSS 9.1): In AzeoTech DAQFactory release 20.7 (Build 2555), an Out-of-bounds Read vulnerability can be exploited by an attacker…
CVE-2026-12921 — High (CVSS 7.8): In AzeoTech DAQFactory versions 21.1 and prior, a Use After Free vulnerability can be exploited by an attacker using…
CVE-2026-12390 — High (CVSS 7.8): In AzeoTech DAQFactory versions 21.1 and prior, a Type Confusion vulnerability can be exploited by an attacker using…
CVE-2025-66590 — High (CVSS 7.8): In AzeoTech DAQFactory release 20.7 (Build 2555), an out-of-bounds write vulnerability can be exploited by an attacker…

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