CVE-2022-33971

HIGH
7.5
CVSS Score
Published: July 4, 2022 at 01:50 AM UTC
Updated: June 17, 2026 at 04:49 AM UTC
108 products affected across 1 vendorNj501-1520 FirmwareNj501-1340 FirmwareNj501-5300 Firmware

Using Machine automation controller NJ series, Machine automation controller NX series, Automation software 'Sysmac Studio', and Programmable Terminal (PT) NA series by OMRON Corporation?

Get instant alerts when new vulnerabilities affect Machine automation controller NJ series, Machine automation controller NX series, Automation software 'Sysmac Studio', and Programmable Terminal (PT) NA series - before attackers find them.

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.48
omron-nj-pa3001 (same device)
v ≤ 1.48
omron-nj-pd3001 (same device)
v ≤ 1.48
omron-nj101-1000 (same device)
v ≤ 1.48
omron-nj101-1020 (same device)
v ≤ 1.48
omron-nj101-9000 (same device)
v ≤ 1.48
omron-nj301-1100 (same device)
v < 1.48
Affected range stops below 1.48, so it looks safe — our inference, not a vendor statement
v ≤ 1.48
omron-nj501-1300 (same device)
v ≤ 1.48
omron-nj501-1320 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCThird Party AdvisoryVDB Entry
https://jvn.jp/en/vu/JVNVU97050784/index.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-294CWE-489

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