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Fencer Vulns
high 8.1

CVE-2022-25156 json

Use of Weak Hash vulnerability in Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU all versions, Mitsubishi Electric MELSEC iQ-F series F…

published 2022-04-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-29899

cvss
8.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

Use of Weak Hash vulnerability in Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU all versions, Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU all versions, Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU all versions, Mitsubishi Electric MELSEC iQ-R series R04/08/16/32/120(EN)CPU all versions, Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU all versions, Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU all versions, Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU all versions, Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4) all versions, Mitsubishi Electric MELSEC iQ-R series RJ71EN71 all versions, Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2 all versions, Mitsubishi Electric MELSEC Q series Q03UDECPU all versions, Mitsubishi Electric MELSEC Q series Q04/06/10/13/20/26/50/100UDEHCPU all versions, Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU all versions, Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU all versions, Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4) all versions, Mitsubishi Electric MELSEC Q series QJ71E71-100 all versions, Mitsubishi Electric MELSEC Q series QJ72BR15 all versions, Mitsubishi Electric MELSEC Q series QJ72LP25(-25/G/GE) all versions, Mitsubishi Electric MELSEC L series L02/06/26CPU(-P) all versions, Mitsubishi Electric MELSEC L series L26CPU-(P)BT all versions, Mitsubishi Electric MELSEC L series LJ71C24(-R2) all versions, Mitsubishi Electric MELSEC L series LJ71E71-100 all versions and Mitsubishi Electric MELSEC L series LJ72GF15-T2 all versions allows a remote unauthenticated attacker to login to the product by using a password reversed from a previously eavesdropped password hash.

Vendor advisories

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

cisa ICSA-22-090-04 updated cvss 5.9

Mitsubishi Electric FA Products

  • Mitsubishi Electric MELSEC iQ-F Series FX5U(C) CPU modules All models Mitsubishi Electric MELSEC iQ-F Series FX5UJ CPU modules All models Mitsubishi Electric MELSEC iQ-R series 04/08/16/32/120(EN)CPU Mitsubishi Electric MELSEC iQ-R series J71GN11-EIP Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU
    +20 more products
    Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU Mitsubishi Electric MELSEC iQ-R series R16/32/64MTCPU Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4) Mitsubishi Electric MELSEC iQ-R series RJ71EN71 Mitsubishi Electric MELSEC iQ-R series RJ71GF11-T2 Mitsubishi Electric MELSEC iQ-R series RJ71GN11-T2 Mitsubishi Electric MELSEC iQ-R series RJ71GP21(S)-SX Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2 Mitsubishi Electric MELSEC L series L02/06/26CPU(-P) L26CPU-(P)BT Mitsubishi Electric MELSEC L series LJ71C24(-R2) Mitsubishi Electric MELSEC L series LJ71E71-100 Mitsubishi Electric MELSEC L series LJ72GF15-T2 Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU Mitsubishi Electric MELSEC Q series Q03UDECPU Q04/06/10/13/20/26/50/100UDEHCPU Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4) Mitsubishi Electric MELSEC Q series QJ71E71-100 Mitsubishi Electric MELSEC Q series QJ72BR15 Mitsubishi Electric MELSEC Q series QJ72LP25(-25/G/GE)
    affected: mitigation “When communicating via untrusted networks or hosts, encrypt the communication path by setting up a VPN.” 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

Exploit prediction

1.26% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • n/a Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU; Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU; Mitsubishi Electric MELSEC iQ-R series R00/01/02CPU; Mitsubishi Electric MELSEC iQ-R series R04/08/16/32/120(EN)CPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120SFCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PCPU; Mitsubishi Electric MELSEC iQ-R series R08/16/32/120PSFCPU; Mitsubishi Electric MELSEC iQ-R series RJ71C24(-R2/R4); Mitsubishi Electric MELSEC iQ-R series RJ71EN71; Mitsubishi Electric MELSEC iQ-R series RJ72GF15-T2; Mitsubishi Electric MELSEC Q series Q03UDECPU; Mitsubishi Electric MELSEC Q series Q04/06/10/13/20/26/50/100UDEHCPU; Mitsubishi Electric MELSEC Q series Q03/04/06/13/26UDVCPU; Mitsubishi Electric MELSEC Q series Q04/06/13/26UDPVCPU; Mitsubishi Electric MELSEC Q series QJ71C24N(-R2/R4); Mitsubishi Electric MELSEC Q series QJ71E71-100; Mitsubishi Electric MELSEC Q series QJ72BR15; Mitsubishi Electric MELSEC Q series QJ72LP25(-25/G/GE); Mitsubishi Electric MELSEC L series L02/06/26CPU(-P); Mitsubishi Electric MELSEC L series L26CPU-(P)BT; Mitsubishi Electric MELSEC L series LJ71C24(-R2); Mitsubishi Electric MELSEC L series LJ71E71-100; Mitsubishi Electric MELSEC L series LJ72GF15-T2

Classification

Weakness
  • CWE-326 Inadequate Encryption Strength

References

Sources

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