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.

Published: 2022-01-10 Last update: 2025-04-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-32998 is rated Moderate Risk (50.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.39%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-32998

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-26 0.50% 0.39% -0.12%
2 2026-04-14 0.39% 0.50% +0.12%
3 2025-11-21 — 0.39% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-32998

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.4 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.2 [email protected]
7.4 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0
8.8 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 9.2 [email protected]

Weakness enumeration for CVE-2021-32998

Affected software / configurations for CVE-2021-32998

Vendor Product Version Raw CPE
fanuc r-30ia_firmware 7.20 cpe:2.3:o:fanuc:r-30ia_firmware:7.20:*:*:*:*:*:*:*
fanuc r-30ia_firmware 7.30 cpe:2.3:o:fanuc:r-30ia_firmware:7.30:*:*:*:*:*:*:*
fanuc r-30ia_firmware 7.40 cpe:2.3:o:fanuc:r-30ia_firmware:7.40:*:*:*:*:*:*:*
fanuc r-30ia_firmware 7.43 cpe:2.3:o:fanuc:r-30ia_firmware:7.43:*:*:*:*:*:*:*
fanuc r-30ia_firmware 7.50 cpe:2.3:o:fanuc:r-30ia_firmware:7.50:*:*:*:*:*:*:*
fanuc r-30ia_firmware 7.63 cpe:2.3:o:fanuc:r-30ia_firmware:7.63:*:*:*:*:*:*:*
fanuc r-30ia_firmware 7.70 cpe:2.3:o:fanuc:r-30ia_firmware:7.70:*:*:*:*:*:*:*
fanuc r-30ia_mate_firmware 7.20 cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.20:*:*:*:*:*:*:*
fanuc r-30ia_mate_firmware 7.30 cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.30:*:*:*:*:*:*:*
fanuc r-30ia_mate_firmware 7.40 cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.40:*:*:*:*:*:*:*
fanuc r-30ia_mate_firmware 7.43 cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.43:*:*:*:*:*:*:*
fanuc r-30ia_mate_firmware 7.50 cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.50:*:*:*:*:*:*:*
fanuc r-30ia_mate_firmware 7.63 cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.63:*:*:*:*:*:*:*
fanuc r-30ia_mate_firmware 7.70 cpe:2.3:o:fanuc:r-30ia_mate_firmware:7.70:*:*:*:*:*:*:*
fanuc r-30ib_mate_firmware 8.10 cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.10:*:*:*:*:*:*:*
fanuc r-30ib_mate_firmware 8.13 cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.13:*:*:*:*:*:*:*
fanuc r-30ib_mate_firmware 8.20 cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.20:*:*:*:*:*:*:*
fanuc r-30ib_mate_firmware 8.23 cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.23:*:*:*:*:*:*:*
fanuc r-30ib_mate_firmware 8.26 cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.26:*:*:*:*:*:*:*
fanuc r-30ib_mate_firmware 8.30 cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.30:*:*:*:*:*:*:*
fanuc r-30ib_mate_firmware 8.33 cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.33:*:*:*:*:*:*:*
fanuc r-30ib_mate_firmware 8.36 cpe:2.3:o:fanuc:r-30ib_mate_firmware:8.36:*:*:*:*:*:*:*
fanuc r-30ib_compact_firmware 8.10 cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.10:*:*:*:*:*:*:*
fanuc r-30ib_compact_firmware 8.13 cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.13:*:*:*:*:*:*:*
fanuc r-30ib_compact_firmware 8.20 cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.20:*:*:*:*:*:*:*
fanuc r-30ib_compact_firmware 8.23 cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.23:*:*:*:*:*:*:*
fanuc r-30ib_compact_firmware 8.26 cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.26:*:*:*:*:*:*:*
fanuc r-30ib_compact_firmware 8.30 cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.30:*:*:*:*:*:*:*
fanuc r-30ib_compact_firmware 8.33 cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.33:*:*:*:*:*:*:*
fanuc r-30ib_compact_firmware 8.36 cpe:2.3:o:fanuc:r-30ib_compact_firmware:8.36:*:*:*:*:*:*:*
fanuc r-30ib_firmware 8.10 cpe:2.3:o:fanuc:r-30ib_firmware:8.10:*:*:*:*:*:*:*
fanuc r-30ib_firmware 8.13 cpe:2.3:o:fanuc:r-30ib_firmware:8.13:*:*:*:*:*:*:*
fanuc r-30ib_firmware 8.20 cpe:2.3:o:fanuc:r-30ib_firmware:8.20:*:*:*:*:*:*:*
fanuc r-30ib_firmware 8.23 cpe:2.3:o:fanuc:r-30ib_firmware:8.23:*:*:*:*:*:*:*
fanuc r-30ib_firmware 8.26 cpe:2.3:o:fanuc:r-30ib_firmware:8.26:*:*:*:*:*:*:*
fanuc r-30ib_firmware 8.30 cpe:2.3:o:fanuc:r-30ib_firmware:8.30:*:*:*:*:*:*:*
fanuc r-30ib_firmware 8.33 cpe:2.3:o:fanuc:r-30ib_firmware:8.33:*:*:*:*:*:*:*
fanuc r-30ib_firmware 8.36 cpe:2.3:o:fanuc:r-30ib_firmware:8.36:*:*:*:*:*:*:*
fanuc r-30ib_mate_plus_firmware 9.10 cpe:2.3:o:fanuc:r-30ib_mate_plus_firmware:9.10:*:*:*:*:*:*:*
fanuc r-30ib_mate_plus_firmware 9.13 cpe:2.3:o:fanuc:r-30ib_mate_plus_firmware:9.13:*:*:*:*:*:*:*
fanuc r-30ib_mate_plus_firmware 9.16 cpe:2.3:o:fanuc:r-30ib_mate_plus_firmware:9.16:*:*:*:*:*:*:*
fanuc r-30ib_mate_plus_firmware 9.30 cpe:2.3:o:fanuc:r-30ib_mate_plus_firmware:9.30:*:*:*:*:*:*:*
fanuc r-30ib_mate_plus_firmware 9.36 cpe:2.3:o:fanuc:r-30ib_mate_plus_firmware:9.36:*:*:*:*:*:*:*
fanuc r-30ib_mate_plus_firmware 9.40 cpe:2.3:o:fanuc:r-30ib_mate_plus_firmware:9.40:*:*:*:*:*:*:*
fanuc r-30ib_compact_plus_firmware 9.10 cpe:2.3:o:fanuc:r-30ib_compact_plus_firmware:9.10:*:*:*:*:*:*:*
fanuc r-30ib_compact_plus_firmware 9.13 cpe:2.3:o:fanuc:r-30ib_compact_plus_firmware:9.13:*:*:*:*:*:*:*
fanuc r-30ib_compact_plus_firmware 9.16 cpe:2.3:o:fanuc:r-30ib_compact_plus_firmware:9.16:*:*:*:*:*:*:*
fanuc r-30ib_compact_plus_firmware 9.30 cpe:2.3:o:fanuc:r-30ib_compact_plus_firmware:9.30:*:*:*:*:*:*:*
fanuc r-30ib_compact_plus_firmware 9.36 cpe:2.3:o:fanuc:r-30ib_compact_plus_firmware:9.36:*:*:*:*:*:*:*
fanuc r-30ib_compact_plus_firmware 9.40 cpe:2.3:o:fanuc:r-30ib_compact_plus_firmware:9.40:*:*:*:*:*:*:*
fanuc r-30ib_mini_plus_firmware 9.10 cpe:2.3:o:fanuc:r-30ib_mini_plus_firmware:9.10:*:*:*:*:*:*:*
fanuc r-30ib_mini_plus_firmware 9.13 cpe:2.3:o:fanuc:r-30ib_mini_plus_firmware:9.13:*:*:*:*:*:*:*
fanuc r-30ib_mini_plus_firmware 9.16 cpe:2.3:o:fanuc:r-30ib_mini_plus_firmware:9.16:*:*:*:*:*:*:*
fanuc r-30ib_mini_plus_firmware 9.30 cpe:2.3:o:fanuc:r-30ib_mini_plus_firmware:9.30:*:*:*:*:*:*:*
fanuc r-30ib_mini_plus_firmware 9.36 cpe:2.3:o:fanuc:r-30ib_mini_plus_firmware:9.36:*:*:*:*:*:*:*
fanuc r-30ib_mini_plus_firmware 9.40 cpe:2.3:o:fanuc:r-30ib_mini_plus_firmware:9.40:*:*:*:*:*:*:*
fanuc r-30ib_plus_firmware 9.10 cpe:2.3:o:fanuc:r-30ib_plus_firmware:9.10:*:*:*:*:*:*:*
fanuc r-30ib_plus_firmware 9.13 cpe:2.3:o:fanuc:r-30ib_plus_firmware:9.13:*:*:*:*:*:*:*
fanuc r-30ib_plus_firmware 9.16 cpe:2.3:o:fanuc:r-30ib_plus_firmware:9.16:*:*:*:*:*:*:*
fanuc r-30ib_plus_firmware 9.30 cpe:2.3:o:fanuc:r-30ib_plus_firmware:9.30:*:*:*:*:*:*:*
fanuc r-30ib_plus_firmware 9.36 cpe:2.3:o:fanuc:r-30ib_plus_firmware:9.36:*:*:*:*:*:*:*
fanuc r-30ib_plus_firmware 9.40 cpe:2.3:o:fanuc:r-30ib_plus_firmware:9.40:*:*:*:*:*:*:*

References for CVE-2021-32998

URL Tags
https://www.cisa.gov/uscert/ics/advisories/icsa-21-243-02 Third Party Advisory US Government Resource
cvelogic Threat Intelligence