CVE-2022-25156 Weak cryptography in 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

High 8.1 Published Updated

Remote attackers can bypass authentication and log in to Mitsubishi PLCs by reversing weakly hashed passwords captured via eavesdropping.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2022-25156?

CVE-2022-25156 is a high-severity vulnerability in 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, published on 1 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-326

Which versions are affected by CVE-2022-25156?

It affects 16 products.

Products include Mitsubishielectric Fx5uc-32mr\/Ds-Ts Firmware, Mitsubishielectric Fx5uc-32mt\/D Firmware, Mitsubishielectric Fx5uc-32mt\/Ds-Ts Firmware, Mitsubishielectric Fx5uc-32mt\/Dss-Ts Firmware, Mitsubishielectric Fx5uc-32mt\/Dss Firmware, Mitsubishielectric Fx5uc Firmware and 10 more.

How do I fix CVE-2022-25156?

No fix has been published for CVE-2022-25156 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-25156 being exploited?

There is no known exploitation of CVE-2022-25156 in the wild and no public exploit code.

Sources

Also known as GHSA-wrqp-7jwm-pjqg.

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