How severe is CVE-2021-22280?

CVE-2021-22280 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22280 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22280?

CVE-2021-22280 affects Br-automation Automation Studio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22280?

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-2021-22280 have an EU (EUVD) identifier?

Yes. CVE-2021-22280 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-9426.

When was CVE-2021-22280 published?

CVE-2021-22280 was published on 2024-05-14 and last updated on 2026-06-17.

CVE-2021-22280

CVE-2021-22280 is a high-severity vulnerability in Br-automation Automation Studio with a CVSS 3.x base score of 7.2. 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-427.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-9426
Weakness: CWE-427
Affected product: Br-automation Automation Studio
Published: 2024-05-14
Last modified: 2026-06-17

Description

Improper DLL loading algorithms in B&R Automation Studio versions >=4.0 and <4.12 may allow an authenticated local attacker to execute code in the context of the product.

Frequently asked questions

What is CVE-2021-22280?: Improper DLL loading algorithms in B&R Automation Studio versions >=4.0 and <4.12 may allow an authenticated local attacker to execute code in the context of the product.
How severe is CVE-2021-22280?: CVE-2021-22280 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22280 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22280?: CVE-2021-22280 affects Br-automation Automation Studio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22280?: 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-2021-22280 have an EU (EUVD) identifier?: Yes. CVE-2021-22280 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-9426.
When was CVE-2021-22280 published?: CVE-2021-22280 was published on 2024-05-14 and last updated on 2026-06-17.

References

https://www.br-automation.com/fileadmin/2021-10_DLL_Hijacking_Vulnerability_in_Automation_Studio-7dd34511.pdf

Affected products (1)

cpe:2.3:a:br-automation:automation_studio:*:*:*:*:*:*:*:*

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