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Fencer Vulns
medium 6.5

CVE-2023-6815 json

Incorrect Privilege Assignment vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series Safety CPU R08/16/32/120SFCPU all versio…

published 2024-02-13 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-59025

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

Incorrect Privilege Assignment vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series Safety CPU R08/16/32/120SFCPU all versions and MELSEC iQ-R Series SIL2 Process CPU R08/16/32/120PSFCPU all versions allows a remote authenticated attacker who has logged into the product as a non-administrator user to disclose the credentials (user ID and password) of a user with a lower access level than the attacker by sending a specially crafted packet.

Vendor advisories

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

cisa ICSA-24-044-01 updated cvss 6.5

Mitsubishi Electric MELSEC iQ-R Series Safety CPU and SIL2 Process CPU (Update A)

  • Mitsubishi Electric MELSEC iQ-R Series Safety CPU R08SFCPU Mitsubishi Electric MELSEC iQ-R Series Safety CPU R16SFCPU Mitsubishi Electric MELSEC iQ-R Series Safety CPU R32SFCPU Mitsubishi Electric MELSEC iQ-R Series Safety CPU R120SFCPU
    affected: mitigation “MELSEC iQ-R Series Safety CPU versions 27 or later used with GX Works3 versions 1.087R or later.” mitsubishielectric.com
  • Mitsubishi Electric MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU Mitsubishi Electric MELSEC iQ-R Series SIL2 Process CPU R16PSFCPU Mitsubishi Electric MELSEC iQ-R Series SIL2 Process CPU R32PSFCPU Mitsubishi Electric MELSEC iQ-R Series SIL2 Process CPU R120PSFCPU
    affected: mitigation “MELSEC iQ-R Series SIL2 Process CPU version 12 or later used with GX Works3 versions 1.105K 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
2 y ago

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Mitsubishi Electric Corporation MELSEC iQ-R Series Safety CPU R08SFCPU
  • Mitsubishi Electric Corporation MELSEC iQ-R Series Safety CPU R16SFCPU
  • Mitsubishi Electric Corporation MELSEC iQ-R Series Safety CPU R32SFCPU
  • Mitsubishi Electric Corporation MELSEC iQ-R Series Safety CPU R120SFCPU
  • Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU
  • Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R16PSFCPU
  • Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R32PSFCPU
  • Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R120PSFCPU

Classification

Weakness
  • CWE-266 Incorrect Privilege Assignment

References

Sources

Fencer Vulns 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.