CVE-2021-32998
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 · uneditedThe FANUC R-30iA and R-30iB series controllers are vulnerable to an out-of-bounds write, which may allow an attacker to remotely execute arbitrary code. INIT START/restore from backup required.
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 confidenceFANUC R-30iA and R-30iB series robot controllers contain an out-of-bounds write vulnerability that allows remote attackers to execute arbitrary code by writing data beyond allocated memory boundaries.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 7.20= 7.30= 7.40= 7.43= 7.50= 7.63= 7.70= 7.20= 7.30= 7.40= 7.43= 7.50= 7.63= 7.70= 8.10= 8.13= 8.20= 8.23= 8.26= 8.30= 8.33= 8.36= 8.10= 8.13= 8.20= 8.23= 8.26= 8.30= 8.33= 8.36= 8.10= 8.13= 8.20= 8.23= 8.26= 8.30= 8.33= 8.36= 9.10= 9.13= 9.16= 9.30= 9.36= 9.40= 9.10= 9.13= 9.16= 9.30= 9.36= 9.40= 9.10= 9.13= 9.16= 9.30= 9.36= 9.40CVSS 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
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify the robot controller modelAccess the controller HMI or use the system information screen to determine if the controller is an R-30iA or R-30iB series variant (including Mate, Compact, Mate Plus, Mini Plus)Affected if The controller is any R-30iA or R-30iB series model
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Retrieve the installed firmware versionNavigate to the controller's system information or version display menu, typically found under 'System' > 'Version' or similar path on the teach pendant HMIAffected if The firmware version cannot be retrieved or is not displayed
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Compare firmware version against affected list for R-30iA modelsIf the controller is R-30iA or R-30iA Mate, check if the installed version matches any of: 7.20, 7.30, 7.40, 7.43, 7.50, 7.63, 7.70Affected if The installed version matches any of these exact values
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Compare firmware version against affected list for R-30iB modelsIf the controller is R-30iB, R-30iB Mate, or R-30iB Compact, check if the installed version matches any of: 8.10, 8.13, 8.20, 8.23, 8.26, 8.30, 8.33, 8.36Affected if The installed version matches any of these exact values
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Compare firmware version against affected list for R-30iB Plus modelsIf the controller is R-30iB Mate Plus, R-30iB Compact Plus, or R-30iB Mini Plus, check if the installed version matches any of: 9.10, 9.13, 9.16, 9.30, 9.36, 9.40Affected if The installed version matches any of these exact values
You are affected if your controller is any R-30iA or R-30iB series model and its firmware version exactly matches one of the listed vulnerable versions for that model family.
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 dataApply INIT START or restore the controller from a clean backup to remediate; this is the only documented remediation path per the official description.
- Consultation6.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,760.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-32998 — 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-2021-32998 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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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.
- 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