No exploitation reportedFix available

CVE-2022-25163

Q: Is CVE-2022-25163 actively exploited?

Active exploitation of CVE-2022-25163 has not been confirmed. Its EPSS score was 2.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-25163?

CVE-2022-25163 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2022-06-02
Fixed in09
WeaknessCWE-20

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

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.

Timeline

dates in UTC

2022-06-0218:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2022-25163?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-25163?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Mitsubishi melsec iq-r rd81mes96n firmwareversion to verify

Branch	Affected	Fixed in	Source
9.x	< 09	09	NVD

Mitsubishi melsec lj71e71-100 firmwareversion to verify

Branch	Affected	Fixed in	Source
24062.x	< 24062	24062	NVD

Mitsubishi melsec qj71e71-100 firmwareversion to verify

Branch	Affected	Fixed in	Source
24062.x	< 24062	24062	NVD

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-22-165-03 CISA3 known affected
Mitsubishi Electric MELSEC-Q/L and MELSEC iQ-R
MELSEC iQ-R Series RD81MES96N: firmware Version 08 and prior · MELSEC-L Series LJ71E71-100: First five digits of serial number 24061 and prior · MELSEC-Q Series QJ71E71-100: First five digits of serial number 24061 and prior

Full record on NVD

Fix

Update Mitsubishi melsec iq-r rd81mes96n firmware to 09
Vendor fix CISA ICSA-22-165-03 · 3 productsMELSEC-Q Series QJ71E71-100: First five digits of serial number 24062 and later
Mitigation from the vendor CISA ICSA-22-165-03 · 3 productsMELSEC-L Series LJ71E71-100: First five digits of serial number 24062 and later
Mitigation from the vendor CISA ICSA-22-165-03 · 3 productsMELSEC iQ-R Series RD81MES96N: firmware Version 09 and later
Mitigation from the vendor CISA ICSA-22-165-03 · 3 productsFor more information on how to patch individual systems, please contact Mitsubishi Electric support.
Mitigation from the vendor CISA ICSA-22-165-03 · 3 productsIf updating to a fixed version is not possible, Mitsubishi Electric recommends users take the following mitigations to minimize risk:
Mitigation from the vendor CISA ICSA-22-165-03 · 3 productsUse a firewall, virtual private network (VPN), web application firewall (WAF), etc. to prevent unauthorized access when Internet access is required.

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 3.19.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
NVDweakness (CWE)CWE-20read 2026-10-23
FIRST EPSSEPSS score2.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2022-06-02
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-25163?

Is CVE-2022-25163 actively exploited?

Active exploitation of CVE-2022-25163 has not been confirmed. Its EPSS score was 2.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-25163?

CVE-2022-25163 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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