Is CVE-2022-33971 in the CISA KEV catalog?

No. CVE-2022-33971 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-33971?

CVE-2022-33971 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-33971?

CVE-2022-33971 has an EPSS score of 1.03% (59th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-33971?

Upgrade nj301-1200 firmware to 1.48 or later.

CVE & CISA-KEV Catalog

CVE-2022-33971

HIGH

7.5

CVSS v3

NVD

Description

Authentication bypass by capture-replay vulnerability exists in Machine automation controller NX7 series all models V1.28 and earlier, Machine automation controller NX1 series all models V1.48 and earlier, and Machine automation controller NJ series all models V 1.48 and earlier, which may allow an adjacent attacker who can analyze the communication between the controller and the specific software used by OMRON internally to cause a denial-of-service (DoS) condition or execute a malicious program.

CWE-294 CWE-489

How to fix

Remediation Available

nj301-1200 firmwareNVD

Affected:< 1.48Fixed in:1.48CVE-2022-33971derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.03%probability of exploitation in 30 days

59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Vendor Advisory1

ia.omron.com

Third-Party Advisory1

jvn.jp

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-02.