CVE-2018-25109
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 · uneditedA vulnerability has been found in Nintendo Animal Crossing, Doubutsu no Mori+ and Doubutsu no Mori e+ 1.00/1.01 on GameCube and classified as critical. Affected by this vulnerability is an unknown functionality of the component Letter Trigram Handler. The manipulation leads to memory corruption. It is possible to launch the attack on the physical device. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.
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 confidenceA memory corruption vulnerability exists in the Letter Trigram Handler component of Nintendo Animal Crossing and Doubutsu no Mori e+ for GameCube. The vulnerability allows memory corruption through unknown functionality in the letter handling system and requires physical access to the device to exploit. Public exploit code exists.
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
- Physical
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/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 checksWork through these to decide whether this CVE applies to you.
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Identify if you own or use the affected gameCheck your GameCube game library for 'Animal Crossing' (North America/Europe) or 'Doubutsu no Mori e+' (Japan). These are the only two titles affected by this CVE.Affected if You have either Animal Crossing (GameCube) or Doubutsu no Mori e+ for GameCube.
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Determine the game region versionCheck the label on your game disc or the game case. The vulnerability affects only the original Animal Crossing and Doubutsu no Mori e+ releases, not later versions or re-releases.Affected if Your disc is labeled 'Animal Crossing' (NTSC-U/PAL) or 'Doubutsu no Mori e+' (NTSC-J).
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Assess physical access to your GameCube consoleConsider who has physical access to the GameCube console where this game is played. The CVE requires physical access to exploit.Affected if Untrusted individuals can physically access the GameCube console or the game disc.
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Evaluate your use of save dataReflect on whether you use modified save files, custom patterns, or save data from untrusted sources for this game. The vulnerability is triggered through the letter handling system.Affected if You import save data or patterns from untrusted sources into your Animal Crossing game.
You are affected if you own Animal Crossing (GameCube) or Doubutsu no Mori e+ and your console is accessible to untrusted individuals or you use untrusted save data.
Generated from the published advisory. Verify against your own configuration.
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 dataSince this is a legacy GameCube game with no vendor patch available, physical security of the console and avoidance of untrusted save data or external inputs are the primary mitigations. Users should avoid connecting the device to untrusted networks or using modified save files.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2018-25109 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2018-25109 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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