How severe is CVE-2023-0863?

CVE-2023-0863 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-0863 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0863?

CVE-2023-0863 primarily affects Abb Terra Ac Wallbox Ul40 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-0863?

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-2023-0863 published?

CVE-2023-0863 was published on 2023-05-17 and last updated on 2026-06-17.

CVE-2023-0863

CVE-2023-0863 is a high-severity vulnerability in Abb Terra Ac Wallbox Ul40 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-287.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Abb Terra Ac Wallbox Ul40 Firmware
Published: 2023-05-17
Last modified: 2026-06-17

Description

Improper Authentication vulnerability in ABB Terra AC wallbox (UL40/80A), ABB Terra AC wallbox (UL32A), ABB Terra AC wallbox (CE) (Terra AC MID), ABB Terra AC wallbox (CE) Terra AC Juno CE, ABB Terra AC wallbox (CE) Terra AC PTB, ABB Terra AC wallbox (CE) Symbiosis, ABB Terra AC wallbox (JP).This issue affects Terra AC wallbox (UL40/80A): from 1.0;0 through 1.5.5; Terra AC wallbox (UL32A) : from 1.0;0 through 1.6.5; Terra AC wallbox (CE) (Terra AC MID): from 1.0;0 through 1.6.5; Terra AC wallbox (CE) Terra AC Juno CE: from 1.0;0 through 1.6.5; Terra AC wallbox (CE) Terra AC PTB : from 1.0;0 through 1.5.25; Terra AC wallbox (CE) Symbiosis: from 1.0;0 through 1.2.7; Terra AC wallbox (JP): from 1.0;0 through 1.6.5.

Frequently asked questions

What is CVE-2023-0863?: Improper Authentication vulnerability in ABB Terra AC wallbox (UL40/80A), ABB Terra AC wallbox (UL32A), ABB Terra AC wallbox (CE) (Terra AC MID), ABB Terra AC wallbox (CE) Terra AC Juno CE, ABB Terra AC wallbox (CE) Terra AC PTB, ABB Terra AC wallbox (CE) Symbiosis, ABB Terra AC wallbox (JP).This issue affects Terra AC wallbox (UL40/80A): from 1.0;0 through 1.5.5; Terra AC wallbox (UL32A) : from 1.0;0 through 1.6.5; Terra AC wallbox (CE) (Terra AC MID): from 1.0;0 through 1.6.5; Terra AC wallbox (CE) Terra AC Juno CE: from 1.0;0 through 1.6.5; Terra AC wallbox (CE) Terra AC PTB : from 1.0;0 through 1.5.25; Terra AC wallbox (CE) Symbiosis: from 1.0;0 through 1.2.7; Terra AC wallbox (JP): from 1.0;0 through 1.6.5.
How severe is CVE-2023-0863?: CVE-2023-0863 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-0863 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0863?: CVE-2023-0863 primarily affects Abb Terra Ac Wallbox Ul40 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-0863?: 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-2023-0863 published?: CVE-2023-0863 was published on 2023-05-17 and last updated on 2026-06-17.

References

https://search.abb.com/library/Download.aspx?DocumentID=9AKK108468A1415&LanguageCode=en&DocumentPartId=&Action=Launch

Affected products (8)

cpe:2.3:o:abb:terra_ac_wallbox_ul40_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:terra_ac_wallbox_80a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:terra_ac_wallbox_ul32a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:terra_ac_wallbox_jp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:terra_ac_wallbox_ce_mid_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:terra_ac_wallbox_ce_juno_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:terra_ac_wallbox_ce_ptb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:terra_ac_wallbox_ce_symbiosis_firmware:*:*:*:*:*:*:*:*

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