Medium severity · published Oct 20, 2025
CVE-2025-5517
Heap Memory Corruption Vulnerability
6.8
CVSS
0.3%
EPSS
No
On KEV
Description
Heap-based Buffer Overflow vulnerability in ABB Terra AC wallbox (UL40/80A), ABB Terra AC wallbox (UL32A), ABB Terra AC wallbox (MID/ CE) -Terra AC MID, ABB Terra AC wallbox (MID/ CE) -Terra AC Juno CE, ABB Terra AC wallbox (MID/ CE) -Terra AC PTB, ABB Terra AC wallbox (JP).This issue affects Terra AC wallbox (UL40/80A): through 1.8.32; Terra AC wallbox (UL32A): through 1.8.2; Terra AC wallbox (MID/ CE) -Terra AC MID: through 1.8.32; Terra AC wallbox (MID/ CE) -Terra AC Juno CE: through 1.8.32; Terra AC wallbox (MID/ CE) -Terra AC PTB: through 1.8.21; Terra AC wallbox (JP): through 1.8.2.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TA
Terra AC wallbox (JP) · ABB
through 1.8.2 · source: vendor
TA
Terra AC wallbox (MID/ CE) -Terra AC Juno CE · ABB
through 1.8.32 · source: vendor
TA
Terra AC wallbox (MID/ CE) -Terra AC MID · ABB
through 1.8.32 · source: vendor
TA
Terra AC wallbox (MID/ CE) -Terra AC PTB · ABB
through 1.8.21 · source: vendor
TA
Terra AC wallbox (UL32A) · ABB
through 1.8.2 · source: vendor
TA
Terra AC wallbox (UL40/80A) · ABB
through 1.8.32 · source: vendor
In the news
VulnerabilityHigh
ABB Terra AC
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 are affected:
Terra AC wallbox (UL40/80A) <=1.8.32, 1.8.33
Terra AC wallbox (UL32A) <=1.8.2, 1.8.34
Terra AC wallbox (MID/ CE) <=1.8.32, 1.8.34
Terra AC wallbox (JP) <=1.8.2, 1.8.34
CVSS
Vendor
Equipment
Vulnerabilities
v3 6.8
ABB
ABB Terra AC
Heap-based Buffer Overflow
Background
Critical Infrastructure Sectors: Commercial Facilities, Critical Manufacturing, Energy, Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Switzerland
Vulnerabilities
Expand All +
CVE-2025-5517
There is potential risk to pollute the memory when a specially crafted OCPP message may be sent to a target vulnerable charger by exploiting unencrypted communication to the Charging Station Management System (CSMS) or fully remotely from its CSMS server.
View CVE Details
Affected Products
ABB Terra AC
Vendor: ABB
Product Version: ABB Terra AC wallbox (UL40/80A) <=1.8.32, ABB Terra AC wallbox (UL32A) <=1.8.2, ABB Terra AC wallbox (MID/ CE) Terra AC MID <=...
May 26, 2026·CISA Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-5517
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-5517
search.abb.com
https://search.abb.com/library/Download.aspx?DocumentID=9AKK108471A8948&LanguageCode=en&DocumentPartId=PDF&Action=Launch
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