CVE-2022-33323

Authentication Bypass Vulnerability in Robot Controller of MELFA SD/SQ series and F-series

HIGH
7.5
CVSS Score
Published: February 2, 2023 at 05:49 AM UTC
Updated: June 17, 2026 at 04:49 AM UTC
297 products affected across 1 vendorRh 12SDH85 FirmwareRh 20SDH85 FirmwareRh 20FH85 Firmware

Using MELFA SD/SQ Series Controller CR1DA-771 of RV-2SD by Mitsubishi Electric Corporation?

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

Description

Active Debug Code vulnerability in robot controller of Mitsubishi Electric Corporation industrial robot MELFA SD/SQ Series and MELFA F-Series allows a remote unauthenticated attacker to gain unauthorized access by authentication bypass through an unauthorized telnet login. As for the affected model names, controller types and firmware versions, see the Mitsubishi Electric's advisory which is listed in [References] section.

Affected

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

All versions
mitsubishielectric-rh-12fh55 (same device)
All versions
mitsubishielectric-rh-12fh70 (same device)
All versions
mitsubishielectric-rh-12fh85 (same device)
All versions
mitsubishielectric-rh-12sdh55 (same device)
All versions
mitsubishielectric-rh-12sdh70 (same device)
All versions
mitsubishielectric-rh-12sdh85 (same device)
All versions
mitsubishielectric-rh-12sqh55 (same device)
All versions
mitsubishielectric-rh-12sqh70 (same device)
All versions
mitsubishielectric-rh-12sqh85 (same device)
All versions
mitsubishielectric-rh-20fh100 (same device)

Remediation

No guide yet

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

7.5HIGHMitsubishi
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-489NVD-CWE-Other

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