CVE-2022-33971: omron corporation machine automation controller nj series, machine automation controller nx series, automation software 'sysmac studio', and programmable terminal (pt) na series Authentication Bypass by Capture-replay

Vulnerability summary

CVE-2022-33971 is a high (CVSS 8.3) Authentication Bypass by Capture-replay vulnerability in omron corporation machine automation controller nj series, machine automation controller nx series, automation software 'sysmac studio', and programmable terminal (pt) na series. EPSS estimates a 1.24% chance of exploitation in the next 30 days, higher than 69% of scored vulnerabilities.

Timeline

1. 04-07-2022
   PublishedVulnerability first disclosed.
2. 02-06-2026
   Last modifiedVulnerability information updated.

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-294Authentication Bypass by Capture-replayA capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).
• CWE-489Active Debug CodeThe product is released with debugging code still enabled or active.