CVE-2022-33208Known exploitationNetwork attack vector

Unauthorized controller operation via replayed authentication

Published Jul 4, 2022 · Updated Aug 3, 2024

Capture-replay authentication bypass in Omron NJ/NX controllers, Sysmac Studio, and NA terminals allows remote attackers to access controllers. The communications connection process accepts captured authentication exchanges when replayed instead of ensuring that each login exchange is fresh. Exploitation requires observing traffic between a controller and Sysmac Studio or an NA terminal, after which the attacker can log in and operate the controller without authorization.

CVSS severity7.5
High
EPSS probability1.82%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Capture-replay authentication bypass in Omron NJ/NX controllers, Sysmac Studio, and NA terminals allows remote attackers to access controllers. The communications connection process accepts captured authentication exchanges when replayed instead of ensuring that each login exchange is fresh. Exploitation requires observing traffic between a controller and Sysmac Studio or an NA terminal, after which the attacker can log in and operate the controller without authorization.

The record

CVE
CVE-2022-33208
Published
Jul 4, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-294, T0849
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 4, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.5OMRON CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-294Authentication Bypass by Capture-replay
T0849Masquerading

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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