How severe is CVE-2023-43776?

CVE-2023-43776 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-43776 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-43776?

CVE-2023-43776 primarily affects Eaton Easy-box-e4-ac1 Firmware. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-43776?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-43776 published?

CVE-2023-43776 was published on 2023-10-17 and last updated on 2026-06-17.

CVE-2023-43776

CVE-2023-43776 is a medium-severity vulnerability in Eaton Easy-box-e4-ac1 Firmware with a CVSS 3.x base score of 6.8. 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-326.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Eaton Easy-box-e4-ac1 Firmware
Published: 2023-10-17
Last modified: 2026-06-17

Description

Eaton easyE4 PLC offers a device password protection functionality to facilitate a secure connection and prevent unauthorized access. It was observed that the device password was stored with a weak encoding algorithm in the easyE4 program file when exported to SD card (*.PRG file ending).

Frequently asked questions

What is CVE-2023-43776?: Eaton easyE4 PLC offers a device password protection functionality to facilitate a secure connection and prevent unauthorized access. It was observed that the device password was stored with a weak encoding algorithm in the easyE4 program file when exported to SD card (*.PRG file ending).
How severe is CVE-2023-43776?: CVE-2023-43776 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-43776 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43776?: CVE-2023-43776 primarily affects Eaton Easy-box-e4-ac1 Firmware. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-43776?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-43776 published?: CVE-2023-43776 was published on 2023-10-17 and last updated on 2026-06-17.

References

https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/etn-va-2023-1010.pdf

Affected products (22)

cpe:2.3:o:eaton:easy-box-e4-ac1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-box-e4-dc1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-box-e4-uc1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-ac-12rc1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-ac-12rcx1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-ac-16re1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy_e4-ac-8re1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-dc-12tc1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-dc-12tcx1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-dc-16te1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-dc-4pe1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-dc-6ae1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-dc-8te1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-uc-12rc1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-uc-12rcx1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-uc-16re1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-uc-16re1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:easy-e4-uc-8re1p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:xv-102-a035tqrb-1e4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:xv-102-a3-57tvrb-1e4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:xv100-box-e4-dc1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eaton:xv100-box-e4-uc1_firmware:*:*:*:*:*:*:*:*

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