How severe is CVE-2022-43765?

CVE-2022-43765 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-43765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43765?

CVE-2022-43765 affects Br-automation Industrial Automation Aprol. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-43765?

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-2022-43765 published?

CVE-2022-43765 was published on 2023-02-08 and last updated on 2026-06-17.

CVE-2022-43765

Q: What is CVE-2022-43765?

B&R APROL versions < R 4.2-07 doesn’t process correctly specially formatted data packages sent to port 55502/tcp, which may allow a network based attacker to cause an application Denial-of-Service.

CVE-2022-43765 is a high-severity vulnerability in Br-automation Industrial Automation Aprol with a CVSS 3.x base score of 7.5. 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-252.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-252
Affected product: Br-automation Industrial Automation Aprol
Published: 2023-02-08
Last modified: 2026-06-17

Description

B&R APROL versions < R 4.2-07 doesn’t process correctly specially formatted data packages sent to port 55502/tcp, which may allow a network based attacker to cause an application Denial-of-Service.

Frequently asked questions

What is CVE-2022-43765?: B&R APROL versions < R 4.2-07 doesn’t process correctly specially formatted data packages sent to port 55502/tcp, which may allow a network based attacker to cause an application Denial-of-Service.
How severe is CVE-2022-43765?: CVE-2022-43765 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-43765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43765?: CVE-2022-43765 affects Br-automation Industrial Automation Aprol. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-43765?: 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-2022-43765 published?: CVE-2022-43765 was published on 2023-02-08 and last updated on 2026-06-17.

References

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

Affected products (1)

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

More vulnerabilities in Br-automation Industrial Automation Aprol

CVE-2022-43764 — Critical (CVSS 9.8): Insufficient validation of input parameters when changing configuration on Tbase server in B&R APROL versions < R…
CVE-2019-19876 — Critical (CVSS 9.8): An issue was discovered in B&R Industrial Automation APROL before R4.2 V7.08. An EnMon PHP script was vulnerable to SQL…
CVE-2019-19875 — Critical (CVSS 9.8): An issue was discovered in B&R Industrial Automation APROL before R4.2 V7.08. Arbitrary commands could be injected…
CVE-2019-19874 — Critical (CVSS 9.8): An issue was discovered in B&R Industrial Automation APROL before R4.2 V7.08. Some web scripts in the web interface…
CVE-2019-19872 — Critical (CVSS 9.8): An issue was discovered in B&R Industrial Automation APROL before R4.2 V7.08. The AprolLoader could be used to inject…
CVE-2022-43761 — Critical (CVSS 9.4): Missing authentication when creating and managing the B&R APROL database in versions < R 4.2-07 allows reading and…

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