Security readout for executives and security teams
Plain-English summary
This vulnerability can let an unauthenticated remote attacker disrupt Ethernet communications on listed Mitsubishi Electric MELSEC and MELIPC products. The known impact is availability loss, not data theft or code execution. Recovery requires a system reset, which can create operational downtime in industrial environments.
Executive priority
Treat this as a high-priority OT availability risk if affected controllers support production, safety-adjacent, or critical process workflows. Prioritize asset identification and network exposure review before broad operational changes.
Technical view
CVE-2022-24946 is an improper resource locking issue, CWE-413, affecting specified Mitsubishi Electric controller and industrial PC versions. A specially crafted packet sent over the network can trigger a denial-of-service condition in Ethernet communications. CVSS 3.1 is 7.5: network exploitable, low complexity, no privileges, no user interaction, high availability impact.
Likely exposure
Exposure is most relevant where affected Mitsubishi Electric MELSEC iQ-R, MELSEC-Q, MELSEC-L, or MELIPC MI5122-VW systems have reachable Ethernet communications from plant, enterprise, vendor, or other untrusted networks.
Exploitation context
The provided sources support remote unauthenticated denial of service, but do not show confirmed active exploitation. The CVE is not marked as CISA KEV in the supplied bundle. No exploit details should be assumed beyond specially crafted packets causing Ethernet communication failure.
Researcher notes
Evidence in the bundle is sufficient for affected-product and impact assessment, but incomplete for product-specific patch status. The issue is availability-only per CVSS and description. Avoid extrapolating to code execution, persistence, or data compromise.
Mitigation direction
- Identify affected models, firmware versions, and serial-number ranges from the advisories.
- Check Mitsubishi PSIRT advisory 2022-007 for product-specific remediation guidance.
- Restrict untrusted network access to affected Ethernet interfaces.
- Plan operational recovery procedures because reset is required after successful DoS.
- Use CISA and JVN advisories for coordinated vendor guidance.
Validation and detection
- Inventory Mitsubishi Electric MELSEC and MELIPC assets in OT environments.
- Compare firmware versions and serial-number prefixes with the listed affected ranges.
- Verify whether affected Ethernet interfaces are reachable from untrusted networks.
- Review incident logs for unexplained Ethernet communication loss requiring reset.
- Confirm remediation status against Mitsubishi PSIRT, CISA, and JVN guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-413: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-24946 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-007_en.pdfCVE reference, Mitsubishi · x_refsource_MISC
- https://jvn.jp/vu/JVNVU90895626/index.htmlCVE reference, Mitsubishi · x_refsource_MISC
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-172-01CVE reference, Mitsubishi · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Resource Locking
Improper Resource Locking represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.