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No exploitation reported

CVE-2021-32998

No exploitation reported by the sources we read.

  • Published2022-01-10
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The 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.

Timeline

dates in UTC
  1. 2022-01-1014:10CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-32998?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-32998?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Fanuc r-30ib compact firmwareversion to verify
BranchAffectedFixed in
8.10= 8.10no fix published
8.13= 8.13no fix published
8.20= 8.20no fix published
8.23= 8.23no fix published
8.26= 8.26no fix published
8.30= 8.30no fix published
8.33= 8.33no fix published
8.36= 8.36no fix published
Fanuc r-30ib firmwareversion to verify
BranchAffectedFixed in
8.10= 8.10no fix published
8.13= 8.13no fix published
8.20= 8.20no fix published
8.23= 8.23no fix published
8.26= 8.26no fix published
8.30= 8.30no fix published
8.33= 8.33no fix published
8.36= 8.36no fix published
Fanuc r-30ib mate firmwareversion to verify
BranchAffectedFixed in
8.10= 8.10no fix published
8.13= 8.13no fix published
8.20= 8.20no fix published
8.23= 8.23no fix published
8.26= 8.26no fix published
8.30= 8.30no fix published
8.33= 8.33no fix published
8.36= 8.36no fix published

6 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-21-243-02 CISA1 known affected

    FANUC Robot Controllers (Update A)

    R-30iA R-30iA Mate: v7 v7.20 v7.30 v7.40 v7.43 v7.50 v7.63 v7.70

Full record on NVD

Fix

  1. Mitigation from the vendor CISA ICSA-21-243-02 · 1 productFANUC is recommending the following, both of which are documented in FANUC's Internet Setup and Operations Manual
  2. Mitigation from the vendor CISA ICSA-21-243-02 · 1 productFANUC Server Access Control (FSAC): Users can configure access to the FANUC webserver based on IP address.
  3. Mitigation from the vendor CISA ICSA-21-243-02 · 1 productNetwork Protocol Access Level: Users can configure which protocols are usable on the controller by creating a firewall where users can close unwanted ports based on the chosen access level.
  4. Mitigation from the vendor CISA ICSA-21-243-02 · 1 productFANUC users can also find any additional information by visiting the FANUC website or contacting FANUC.

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-04-17
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.17.42025-04-17
  • NVDCVSS 3.17.4read 2026-10-23
  • NVDCVSS 2.08.8read 2026-10-23
  • CNAweakness (CWE)CWE-787read 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score1.2 %2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Published
2022-01-10
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2021-32998?

The 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.

Is CVE-2021-32998 actively exploited?

Active exploitation of CVE-2021-32998 has not been confirmed. Its EPSS score was 1.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-32998?

CVE-2021-32998 has a CVSS v3 base score of 7.4 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H.

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