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Classic Buffer OverflowWeakness · CWE-120

CVE-2025-12142

MEDIUM · 6.1 CVSS v3.1 Published 2025-10-29
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
63/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Classic buffer overflow vulnerability in ABB Terra AC wallbox firmware allows a buffer copy operation without proper size validation. This could allow an attacker to overwrite adjacent memory regions, potentially leading to code execution, denial of service, or unexpected behavior in the EV charging station.

MitigationContact ABB for available firmware updates addressing this vulnerability. Until a patch is released, network segment the device and restrict physical/administrative access to reduce attack surface.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Adjacent
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the device model
    Locate the ABB Terra AC wallbox physical label or check the device's web interface/admin panel for model information
    Affected if Device is not an ABB Terra AC wallbox
  2. Determine the installed firmware version
    Access the device admin interface (typically via web browser at the device's IP address) and navigate to Settings > About or System > Firmware to view the installed version number
    Affected if Firmware version is unknown or cannot be verified
  3. Compare firmware version to affected releases
    Record the exact firmware version string (e.g., SW_X.X.X or similar format) and compare against any official ABB security advisories or release notes for CVE-2025-12142
    Affected if No official vulnerable version list is available and the device is an ABB Terra AC unit
  4. Check device network exposure
    Verify if the device management interface is accessible from untrusted networks (public IP, internet-facing) or if it resides in an unrestricted network segment
    Affected if Device management interface is exposed to untrusted networks

The environment is affected if the device is an ABB Terra AC wallbox with firmware where the buffer copy operation lacks proper size validation, regardless of network exposure status.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Contact ABB for available firmware updates addressing this vulnerability. Until a patch is released, network segment the device and restrict physical/administrative access to reduce attack surface.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,380
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-12142 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data