No exploitation reported

CVE-2022-25156

No exploitation reported by the sources we read.

Published2022-04-01
WeaknessCWE-326

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2022-04-0123:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-25156?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-25156?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Mitsubishielectric fx5uc firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Mitsubishielectric fx5uc-32mr\/ds-ts firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Mitsubishielectric fx5uc-32mt\/d firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

13 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-22-090-04 CISA26 known affected
Mitsubishi Electric FA Products
MELSEC iQ-F Series FX5U(C) CPU modules All models: All versions · MELSEC iQ-F Series FX5UJ CPU modules All models: All versions · MELSEC iQ-R series 04/08/16/32/120(EN)CPU: All versions · +23 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-22-090-04 · 26 productsWhen communicating via untrusted networks or hosts, encrypt the communication path by setting up a VPN.
Mitigation from the vendor CISA ICSA-22-090-04 · 26 productsUse firewalls or IP filter function to restrict connections to the products and prevent access from untrusted networks or hosts. For details on IP filter function, refer to the following product manual:,empty icsa-22-090-04.json,vendor_fix,“12.1 IP Filter Function” in the MELSEC iQ-F FX 5 User's Ma…
Mitigation from the vendor CISA ICSA-22-090-04 · 26 products"IP Filter Function" of "6.2 Security Function" in the MELSEC iQ-R Motion Controller Programming Manual (Common)
Mitigation from the vendor CISA ICSA-22-090-04 · 26 products"IP filter" of "1.4 Security" in the MELSEC iQ-R CC-Link IE TSN User's Manual (Application)
Mitigation from the vendor CISA ICSA-22-090-04 · 26 products"IP filter" of "9.5 Security" in the MELSEC iQ-R CC-Link IE TSN Plus Master/Local Module User's Manual
Mitigation from the vendor CISA ICSA-22-090-04 · 26 products"14.3 IP Filter Function" in the Q Corresponding Ethernet Interface Module User's Manual (Basic)

Advisories and patches

www.mitsubishielectric.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.1read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
NVDweakness (CWE)CWE-326read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2022-04-01
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-25156?

Is CVE-2022-25156 actively exploited?

Active exploitation of CVE-2022-25156 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-25156?

CVE-2022-25156 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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