How severe is CVE-2023-28343?

CVE-2023-28343 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-28343 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 85% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28343?

CVE-2023-28343 affects Apsystems Energy Communication Unit Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28343?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-28343 published?

CVE-2023-28343 was published on 2023-03-14 and last updated on 2026-06-17.

CVE-2023-28343

CVE-2023-28343 is a critical-severity vulnerability in Apsystems Energy Communication Unit Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 85% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 85% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Apsystems Energy Communication Unit Firmware
Published: 2023-03-14
Last modified: 2026-06-17

Description

OS command injection affects Altenergy Power Control Software C1.2.5 via shell metacharacters in the index.php/management/set_timezone timezone parameter, because of set_timezone in models/management_model.php.

Frequently asked questions

What is CVE-2023-28343?: OS command injection affects Altenergy Power Control Software C1.2.5 via shell metacharacters in the index.php/management/set_timezone timezone parameter, because of set_timezone in models/management_model.php.
How severe is CVE-2023-28343?: CVE-2023-28343 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-28343 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 85% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28343?: CVE-2023-28343 affects Apsystems Energy Communication Unit Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28343?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-28343 published?: CVE-2023-28343 was published on 2023-03-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apsystems:energy_communication_unit_firmware:c1.2.5:*:*:*:*:*:*:*

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