Heap-based Buffer Overflow in ABB Terra AC Wallbox Products
CVE-2025-5517

6.1MEDIUM

Key Information:

Vendor

Abb

Status
Terra Ac Wallbox (ul40/80a)
Terra Ac Wallbox (ul32a)
Terra Ac Wallbox (mid/ Ce) -terra Ac Mid
Terra Ac Wallbox (mid/ Ce) -terra Ac Juno Ce
Vendor
CVE Published:
20 October 2025

What is CVE-2025-5517?

A heap-based buffer overflow vulnerability has been identified in multiple models of ABB's Terra AC wallboxes, compromising device integrity and exposing users to potential security risks. This vulnerability allows an attacker to exploit memory allocation errors, which can lead to arbitrary code execution, denial of service, or unauthorized access. The issue affects specific versions across various Terra AC wallbox models, necessitating prompt updates to secure affected devices.

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Deploy the Patch

Affected Version(s)

Terra AC wallbox (JP) 0 <= 1.8.2

Terra AC wallbox (MID/ CE) -Terra AC Juno CE 0 <= 1.8.32

Terra AC wallbox (MID/ CE) -Terra AC MID 0 <= 1.8.32

References

https://search.abb.com/library/Download.aspx?DocumentID=9...

CVSS V4

Score:
6.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

ABB also acknowledges and thanks Itai Shmueli from Saiflow who also responsibly disclosed these vulnerabilities and provided valuable input on product improvements.
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