Authentication bypass by capture-replay vulnerability exists in Machine automation controller NX7 series all models V1.28 and earlier, Machi
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.
- Published
- Jul 3, 2022
- Updated
- Jun 17, 2026
- EPSS
- 1.2% · 68th percentile
- CWE
- CWE-294
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Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| omron | nx701-1600 firmware | cpe:2.3:o:omron:nx701-1600_firmware |
| omron | nx701-1600 | cpe:2.3:h:omron:nx701-1600 |
| omron | nx701-1700 firmware | cpe:2.3:o:omron:nx701-1700_firmware |
| omron | nx701-1700 | cpe:2.3:h:omron:nx701-1700 |
| omron | nx701-z700 firmware | cpe:2.3:o:omron:nx701-z700_firmware |
| omron | nx701-z700 | cpe:2.3:h:omron:nx701-z700 |
| omron | nx701-z600 firmware | cpe:2.3:o:omron:nx701-z600_firmware |
| omron | nx701-z600 | cpe:2.3:h:omron:nx701-z600 |
| omron | nx701-1720 firmware | cpe:2.3:o:omron:nx701-1720_firmware |
| omron | nx701-1720 | cpe:2.3:h:omron:nx701-1720 |
| omron | nx701-1620 firmware | cpe:2.3:o:omron:nx701-1620_firmware |
| omron | nx701-1620 | cpe:2.3:h:omron:nx701-1620 |
and 92 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- omron nj-pa3001 firmwareup to 1.48 inclusive
- omron nj-pd3001 firmwareup to 1.48 inclusive
- omron nj101-1000 firmwareup to 1.48 inclusive
- omron nj101-1020 firmwareup to 1.48 inclusive
- omron nj101-9000 firmwareup to 1.48 inclusive
- omron nj101-9020 firmwareup to 1.48 inclusive
- omron nj301-1100 firmwareup to 1.48 inclusive
- omron nj301-1200 firmwarebefore 1.48
- omron nj501-1300 firmwareup to 1.48 inclusive
- omron nj501-1320 firmwareup to 1.48 inclusive
- omron nj501-1340 firmwareup to 1.48 inclusive
- omron nj501-140 firmwareup to 1.48 inclusive
- omron nj501-1420 firmwareup to 1.48 inclusive
- omron nj501-1500 firmwareup to 1.48 inclusive
- omron nj501-1520 firmwareup to 1.48 inclusive
- omron nj501-4300 firmwareup to 1.48 inclusive
- omron nj501-4310 firmwareup to 1.48 inclusive
- omron nj501-4320 firmwareup to 1.48 inclusive
- omron nj501-4400 firmwareup to 1.48 inclusive
- omron nj501-4500 firmwareup to 1.48 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (jpcert). Independent of NVD's CPE analysis and usually ahead of it.
OMRON Corporation Machine automation controller NJ series, Machine automation controller NX series, Automation software 'Sysmac Studio', and Programmable Terminal (PT) NA series
- 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 1affected
Same product
omron: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-31206The Omron SYSMAC Nx product family PLCs (NJ series, NY series, NX series, and PMAC series) through 2022-005-18 lack cryptographic authentica39Monitor
- CVE-2022-33208Authentication bypass by capture-replay vulnerability exists in Machine automation controller NJ series all models V 1.48 and earlier, Machi33Monitor
- CVE-2022-34151Use of hard-coded credentials vulnerability exists in Machine automation controller NJ series all models V 1.48 and earlier, Machine automat32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone on the same network segment can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Adjacent
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-294 · Authentication Bypass by Capture-replayCVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Session SidejackingCAPEC-102likelihood: High · High
- KerberoastingCAPEC-509High
- Remote Services with Stolen CredentialsCAPEC-555Very High
- Windows Admin Shares with Stolen CredentialsCAPEC-561
- Reusing Session IDs (aka Session Replay)CAPEC-60likelihood: High · High
- Use of Captured Hashes (Pass The Hash)CAPEC-644likelihood: Medium · High
- Use of Captured Tickets (Pass The Ticket)CAPEC-645likelihood: Low · High
- Use of Known Kerberos CredentialsCAPEC-652likelihood: Medium · High
ATT&CK techniques
- Remote ServicesT1021
- Remote Services:SMB/Windows Admin SharesT1021.002
- Email Collection:Remote Email CollectionT1114.002
- External Remote ServicesT1133
- Access Token Manipulation:Token Impersonation/TheftT1134.001
- Use Alternate Authentication Material:Pass The HashT1550.002
- Use Alternate Authentication Material:Pass The TicketT1550.003
- Use Alternate Authentication Material:Web Session CookieT1550.004
- Adversary-in-the-MiddleT1557
- Steal or Forge Kerberos TicketsT1558
- Steal or Forge Kerberos Tickets:KerberoastingT1558.003
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.