CVE-2022-33971

mediumpriority · track · 30OT risk · elevatedEPSS 0.012 · 69 %ileEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.24% (69th) EPSS
CVSS 5.4 · medium
Is it mine?
61 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

  • MitigationNJ/NX-series Machine Automation Controllerscisa_csaf_ot

    Conduct periodical data backups and maintenance to prepare for potential data loss.

02

cvss

Technical severity, 0–10. One row per scoring source.

8.3
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.4–8.3

v2.05.4mediumAV:A/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 5.5 · impact 6.4
v3.17.5highCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.6 · impact 5.9
v3.08.3highCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:Hsecondary · CISA US
v3.17.6highAV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.18.3highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:Hsecondary · ENISA EU
v3.18.3highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:Hsecondaryexploitability 1.6 · impact 6
v3.16.9mediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-294USprimaryCWE-294USCWE-489USCWE-489US
05

affected products (61)

Products and version ranges known to be affected.

showing 20 of 61
06

advisories (1)

Vendor and ecosystem advisories describing this.

  • ICSA-22-314-07Omron NJ/NX-series Machine Automation Controllers2022-11-10icsa · cisa_csaf_otUS

    Successful exploitation of this vulnerability could allow an attacker to obtain unauthorized access to the device and cause the device to be in an out of service state or execute a malicious program on the device.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otnvdNVDCVE.orgMITRE
published 2022-07-04modified 2026-06-17
10

references (10)

External citations — patches, advisories, analysis.

scry

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