How severe is CVE-2021-32996?

CVE-2021-32996 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-32996 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32996?

CVE-2021-32996 primarily affects Fanuc R-30ia Firmware. In total, 62 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-32996?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-32996 published?

CVE-2021-32996 was published on 2022-01-10 and last updated on 2026-06-17.

CVE-2021-32996

CVE-2021-32996 is a high-severity vulnerability in Fanuc R-30ia Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-192.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-192
Affected product: Fanuc R-30ia Firmware
Published: 2022-01-10
Last modified: 2026-06-17

Description

The FANUC R-30iA and R-30iB series controllers are vulnerable to integer coercion errors, which cause the device to crash. A restart is required.

Frequently asked questions

What is CVE-2021-32996?: The FANUC R-30iA and R-30iB series controllers are vulnerable to integer coercion errors, which cause the device to crash. A restart is required.
How severe is CVE-2021-32996?: CVE-2021-32996 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-32996 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32996?: CVE-2021-32996 primarily affects Fanuc R-30ia Firmware. In total, 62 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-32996?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-32996 published?: CVE-2021-32996 was published on 2022-01-10 and last updated on 2026-06-17.

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-243-02

Affected products (62)

cpe:2.3:o:fanuc:r-30ia_firmware:7.20:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_firmware:7.30:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_firmware:7.40:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_firmware:7.43:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_firmware:7.50:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_firmware:7.63:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_firmware:7.70:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.20:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.30:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.40:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.43:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.50:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.63:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.70:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.10:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.13:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.20:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.23:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.26:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.30:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.33:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.36:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.10:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.13:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.20:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.23:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.26:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.30:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.33:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.36:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_firmware:8.10:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_firmware:8.13:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_firmware:8.20:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_firmware:8.23:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_firmware:8.26:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_firmware:8.30:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_firmware:8.33:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_firmware:8.36:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_plus_firmware:9.10:*:*:*:*:*:*:*
cpe:2.3:o:fanuc:r-30ib_mate_plus_firmware:9.13:*:*:*:*:*:*:*

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