CVE-2022-43764: Buffer overflow when changing configuration on Tbase Server

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-02-08 · updated 2026-06-17
Weakness: CWE-121

Description

Insufficient validation of input parameters when changing configuration on Tbase server in B&R APROL versions < R 4.2-07 could result in buffer overflow. This may lead to Denial-of-Service conditions or execution of arbitrary code.

Affected products

B&R Industrial Automation B&R APROL: before r4.2-07 — fixed in r4.2-07

How to fix

Upgrade to a fixed version: B&R Industrial Automation B&R APROL r4.2-07. Check the vendor advisory for mitigations.

References

https://www.br-automation.com/downloads_br_productcatalogue/assets/1674823095245-en-original-1.0.pdf
https://www.br-automation.com/downloads_br_productcatalogue/assets/1674823095245-en-original-1.0.pdf

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