Authentication to access the AC wallbox via its Bluetooth Low Energy (BLE) channel can be bypassed,

published 2023-05-17 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-12860

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits: 0; none known

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.

Patch / fix

fixed in 8

abb terra_ac_wallbox_ul40_firmware 1.5.6
abb terra_ac_wallbox_80a_firmware 1.5.6
abb terra_ac_wallbox_ul32a_firmware 1.6.6
abb terra_ac_wallbox_jp_firmware 1.6.6
abb terra_ac_wallbox_ce_mid_firmware 1.6.6
abb terra_ac_wallbox_ce_juno_firmware 1.6.6
abb terra_ac_wallbox_ce_ptb_firmware 1.5.26
abb terra_ac_wallbox_ce_symbiosis_firmware 1.2.8

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 21 mo ago (2025-01-22)

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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)

Classification

Weakness

CWE-287 Improper Authentication

References

search.abb.com /library/Download.aspx?DocumentID=9AKK108468A1415&LanguageCode=en&DocumentPartId=&Action=Launch
vendor-advisory

Sources

CVE List CVE-2023-0863
NVD CVE-2023-0863

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary