How severe is CVE-2022-30243?

CVE-2022-30243 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-30243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-30243?

CVE-2022-30243 affects Honeywell Alterton Visual Logic Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-30243?

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-2022-30243 published?

CVE-2022-30243 was published on 2022-07-15 and last updated on 2026-06-17.

CVE-2022-30243

CVE-2022-30243 is a high-severity vulnerability in Honeywell Alterton Visual Logic Firmware with a CVSS 3.x base score of 8.8. 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-829.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-829
Affected product: Honeywell Alterton Visual Logic Firmware
Published: 2022-07-15
Last modified: 2026-06-17

Description

Honeywell Alerton Visual Logic through 2022-05-04 allows unauthenticated programming writes from remote users. This enables code to be stored on the controller and then run without verification. A user with malicious intent can send a crafted packet to change and/or stop the program without the knowledge of other users, altering the controller's function. After the programming change, the program needs to be overwritten in order for the controller to restore its original operational function.

Frequently asked questions

What is CVE-2022-30243?: Honeywell Alerton Visual Logic through 2022-05-04 allows unauthenticated programming writes from remote users. This enables code to be stored on the controller and then run without verification. A user with malicious intent can send a crafted packet to change and/or stop the program without the knowledge of other users, altering the controller's function. After the programming change, the program needs to be overwritten in order for the controller to restore its original operational function.
How severe is CVE-2022-30243?: CVE-2022-30243 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-30243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-30243?: CVE-2022-30243 affects Honeywell Alterton Visual Logic Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-30243?: 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-2022-30243 published?: CVE-2022-30243 was published on 2022-07-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:honeywell:alterton_visual_logic_firmware:*:*:*:*:*:*:*:*

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