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Fencer Intel
high 7.5

CVE-2022-33323 json

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

published 3y ago modified 4mo ago also EUVD-2022-36366

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

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.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-026-05 updated cvss 7.5

Mitsubishi Electric MELFA SD/SQ series and F-series Robot Controllers

  • Mitsubishi Electric Corporation MELFA F-Series <= S7x, <= R7x Mitsubishi Electric Corporation MELFA SD/SQ Series <= S7x, <= R7x
    affected: mitigation “MELFA SD/SQ Series: Update to firmware version S7y or later” mitsubishielectric.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last yr.

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-771 of RV-2SD
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-771 of RV-2SDB
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-721 of RV-3SD
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-721 of RV-3SD-SM
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-721 of RV-3SDC
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-721 of RV-3SDB
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-721 of RV-3SDB-SM
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-731 of RV-3SDBC
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-731 of RV-3SDJ
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-731 of RV-3SDJ-SM
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-731 of RV-3SDJC
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-731 of RV-3SDJB
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-731 of RV-3SDJB-SM
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-731 of RV-3SDJBC
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-711 of RV-6SD
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-711 of RV-6SDC
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-711 of RV-6SDL
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-711 of RV-6SDLC
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR3D-711M of RV-6SDC-SM
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR3D-711M of RV-6SDLC-SM
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR3D-701M of RV-12SD
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR3D-701 of RV-12SDC
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR3D-701M of RV-12SDL
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR3D-701 of RV-12SDLC
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-781 of RH-3SDHR3515
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-781 of RH-3SDHR3515C
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-781 of RH-3SDHR3515W
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH3520
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH3532
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH4520
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH4532
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH5532
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH5520
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH3517M
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH3517M-SM
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH3527M
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH4517M
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH4527M
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH5517M
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH5517M-SM
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH5527M
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH3517C
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH3527C
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH4517C
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH4527C
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH5517C
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR1DA-761 of RH-6SDH5527C
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-741 of RH-12SDH5535
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-741 of RH-12SDH5545
  • Mitsubishi Electric Corporation MELFA SD/SQ Series Controller CR2DA-741 of RH-12SDH7035

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.