How severe is CVE-2022-43606?

CVE-2022-43606 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-2022-43606 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43606?

CVE-2022-43606 affects Opener Project Opener. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-43606?

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-2022-43606 published?

CVE-2022-43606 was published on 2023-03-16 and last updated on 2026-06-17.

CVE-2022-43606

CVE-2022-43606 is a high-severity vulnerability in Opener Project Opener 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-824.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-824
Affected product: Opener Project Opener
Published: 2023-03-16
Last modified: 2026-06-17

Description

A use-of-uninitialized-pointer vulnerability exists in the Forward Open connection_management_entry functionality of EIP Stack Group OpENer development commit 58ee13c. A specially-crafted EtherNet/IP request can lead to use of a null pointer, causing the server to crash. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.

Frequently asked questions

What is CVE-2022-43606?: A use-of-uninitialized-pointer vulnerability exists in the Forward Open connection_management_entry functionality of EIP Stack Group OpENer development commit 58ee13c. A specially-crafted EtherNet/IP request can lead to use of a null pointer, causing the server to crash. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.
How severe is CVE-2022-43606?: CVE-2022-43606 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-2022-43606 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43606?: CVE-2022-43606 affects Opener Project Opener. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-43606?: 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-2022-43606 published?: CVE-2022-43606 was published on 2023-03-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opener_project:opener:*:*:*:*:*:*:*:*

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CVE-2020-13556 — Critical (CVSS 9.8): An out-of-bounds write vulnerability exists in the Ethernet/IP server functionality of EIP Stack Group OpENer 2.3 and…
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CVE-2022-32434 — High (CVSS 7.8): EIPStackGroup OpENer v2.3.0 was discovered to contain a stack overflow via /bin/posix/src/ports/POSIX/OpENer+0x56073d.

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