CVE-2021-22280
DLL Hijacking Vulnerability in Automation Studio
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
DLL Hijacking Vulnerability in Automation Studio
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.
- Record
CVE-2021-22280- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2021-9426
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.
- Record
EUVD-2021-9426- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x53h-2cjp-mwcx
Improper DLL loading algorithms in B&R Automation Studio may allow an authenticated local...
Improper DLL loading algorithms in B&R Automation Studio may allow an authenticated local attacker to execute code with elevated privileges.
This issue affects Automation Studio versions before 4.12.
- Record
GHSA-x53h-2cjp-mwcx- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-20, CWE-427
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-22280- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-427, CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-22280 is a high vulnerability (CVSS 7.2) in B&r Industrial Automation Automation Studio, published May 14, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 5th percentile. No source names a fixed version.