HOMEVULNERABILITIESCVE-2022-25156
HIGH

CVE-2022-25156

CWE-326Published: April 1, 2022· Updated: Jun 17, 2026

8.1
CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2022-25156 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

mitsubishielectric32 product(s)
fx5uc firmwarefx5ucfx5uc-32mr\/ds-ts firmwarefx5uc-32mr\/ds-tsfx5uc-32mt\/d firmwarefx5uc-32mt\/dfx5uc-32mt\/dss firmwarefx5uc-32mt\/dssfx5uj-24mr\/es firmwarefx5uj-24mr\/esfx5uj-24mt\/es firmwarefx5uj-24mt\/es+20
Source: NVD CPE · 32 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://jvn.jp/vu/JVNVU96577897/index.html
ADVISORYhttps://www.cisa.gov/uscert/ics/advisories/icsa-22-090-04
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-031_en.pdf
ADVISORYhttps://jvn.jp/vu/JVNVU96577897/index.html
ADVISORYhttps://www.cisa.gov/uscert/ics/advisories/icsa-22-090-04
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-031_en.pdf

All References (6)

→
https://jvn.jp/vu/JVNVU96577897/index.htmlThird Party Advisory
→
https://www.cisa.gov/uscert/ics/advisories/icsa-22-090-04Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-031_en.pdfVendor Advisory
→
https://jvn.jp/vu/JVNVU96577897/index.htmlThird Party Advisory
→
https://www.cisa.gov/uscert/ics/advisories/icsa-22-090-04Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-031_en.pdfVendor Advisory

Quick Facts

CVE IDCVE-2022-25156
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-326
CISA KEVNo
Affected1 vendor(s)
PublishedApr 1, 2022

Related CVEs (CWE-326)

CVE-2020-6966
10.0
CVE-2014-9199
10.0
CVE-2026-44523
10.0
CVE-2013-7287
9.8
CVE-2022-24116
9.8
CVE-2021-42216
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-25156 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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