High severity · published May 14, 2024
CVE-2021-22280
DLL Hijacking Vulnerability in Automation Studio
7.2
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Automation Studio · B&R Industrial Automation
before 4.12 · source: vendor, NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22280
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22280
Vendor Advisory
https://www.br-automation.com/fileadmin/2021-10_DLL_Hijacking_Vulnerability_in_Automation_Studio-7dd34511.pdf
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