Medium severity · published Oct 29, 2025
CVE-2025-12142
BSS(Block Started by Symbol) Memory Corruption Vulnerability
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in ABB Terra AC wallbox.This issue affects Terra AC wallbox: through 1.8.33.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TA
Terra AC wallbox · ABB
through 1.8.33 · source: vendor
In the news
VulnerabilityMedium
ABB Terra AC Wallbox
View CSAF Summary ABB is aware of vulnerabilities in the product versions listed as affected in the advisory. An attacker who successfully exploited this vulnerability could cause the pollution of heap memory which potentially takes remote control of the product and performs a write operation to the flash memory to alter the firmware behavior. The following versions of ABB Terra AC Wallbox are affected: Terra AC wallbox (JP) <=1.8.33, 1.8.36 (CVE-2025-10504, CVE-2025-12142, CVE-2025-12143) CVSS Vendor Equipment Vulnerabilities v3 6.1 ABB ABB Terra AC Wallbox Heap-based Buffer Overflow, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Stack-based Buffer Overflow Background Critical Infrastructure Sectors: Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2025-10504 There is potential risk to pollute the memory when developing apps which has used to communicate with charger according to self-defined protocol if developers don’t strictly follow the field length which has not been validated in firmware. View CVE Details Affected Products ABB Terra AC Wallbox Vendor: ABB Product Version: ABB Terra AC wallbox (JP) <=1.8.33 Product Status: fixed, known_affected Remediations Vendor fix The problem is corrected in the following product version; apply the followin...
May 21, 2026·CISA Advisories