CVE-2022-24946Network attack vector

Ethernet interruption via unreleased packet resources

Published Jun 15, 2022 · Updated Jun 2, 2026

Improper resource locking in Mitsubishi Electric MELSEC and MELIPC controllers allows remote attackers to interrupt Ethernet communications. The Ethernet-port packet handler fails to release a resource after processing a specially crafted packet, exhausting the resource and halting Ethernet service. No authentication is required, and recovery requires a system reset.

CVSS severity7.5
High
EPSS probability1.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper resource locking in Mitsubishi Electric MELSEC and MELIPC controllers allows remote attackers to interrupt Ethernet communications. The Ethernet-port packet handler fails to release a resource after processing a specially crafted packet, exhausting the resource and halting Ethernet service. No authentication is required, and recovery requires a system reset.

The record

CVE
CVE-2022-24946
Published
Jun 15, 2022
Updated
Jun 2, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-667, CWE-413, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NISTAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5Mitsubishi Electric CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
CWE-413Improper Resource Locking
T0814Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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