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Fencer Vulns
critical 9.8

CVE-2022-25163 json

Improper Input Validation vulnerability in Mitsubishi Electric MELSEC-Q Series QJ71E71-100 first 5 digits of serial number "24061" or prior…

published 2022-06-02 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-29906

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

Improper Input Validation vulnerability in Mitsubishi Electric MELSEC-Q Series QJ71E71-100 first 5 digits of serial number "24061" or prior, Mitsubishi Electric MELSEC-L series LJ71E71-100 first 5 digits of serial number "24061" or prior and Mitsubishi Electric MELSEC iQ-R Series RD81MES96N firmware version "08" or prior allows a remote unauthenticated attacker to cause a denial of service (DoS) condition or execute malicious code on the target products by sending specially crafted packets.

Patch / fix

  • mitsubishi melsec_iq-r_rd81mes96n_firmware 09
  • mitsubishi melsec_qj71e71-100_firmware 24062
  • mitsubishi melsec_lj71e71-100_firmware 24062

Vendor advisories

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

cisa ICSA-22-165-03 updated cvss 8.1

Mitsubishi Electric MELSEC-Q/L and MELSEC iQ-R

  • Mitsubishi Electric MELSEC iQ-R Series RD81MES96N <= 08 Mitsubishi Electric MELSEC-L Series LJ71E71-100 <= first five digits of serial number 24061 Mitsubishi Electric MELSEC-Q Series QJ71E71-100 <= first five digits of serial number 24061 24061
    affected: vendor fix, mitigation “MELSEC-L Series LJ71E71-100: First five digits of serial number 24062 and 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

Exploit prediction

2.31% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • n/a Mitsubishi Electric MELSEC-Q Series QJ71E71-100; Mitsubishi Electric MELSEC-L series LJ71E71-100; Mitsubishi Electric MELSEC iQ-R Series RD81MES96N

Classification

Weakness
  • CWE-20 Improper Input Validation

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.