# Information tampering and Denial-of-service (DoS) vulnerability in CC-Link IE TSN communication protocol

CVE record · `CVE-2026-13584`

- **Identifiers:** `CVE-2026-13584`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **CNA:** Mitsubishi
- **Weakness (CWE):** [CWE-924](https://cwe.mitre.org/data/definitions/924.html)
- **Tags:** [CWE-924](https://agentprime.io/advisories/tag/cwe-924.md)
- **Technologies:** [Mitsubishi Electric Corporation MELSEC MX Controller MX-R model MXR300-16](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-r-model-mxr300-16.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-R model MXR300-32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-r-model-mxr300-32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-R model MXR300-64](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-r-model-mxr300-64.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-R model MXR500-128](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-r-model-mxr500-128.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-R model MXR500-256](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-r-model-mxr500-256.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100-8-N32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100-8-n32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100-8-P32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100-8-p32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100-16-N32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100-16-n32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100-16-P32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100-16-p32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100S-N32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100s-n32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100S-P32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100s-p32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100S-8-N32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100s-8-n32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100S-8-P32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100s-8-p32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100S-16-N32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100s-16-n32.md) · [Mitsubishi Electric Corporation MELSEC MX Controller MX-F model MXF100S-16-P32](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-melsec-mx-controller-mx-f-model-mxf100s-16-p32.md) · [Mitsubishi Electric Corporation Master/local module RJ71GN11-T2](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-master-local-module-rj71gn11-t2.md) · [Mitsubishi Electric Corporation Master/local module RJ71GN11-SX](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-master-local-module-rj71gn11-sx.md) · [Mitsubishi Electric Corporation Master/local module RJ71GN11-EIP](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-master-local-module-rj71gn11-eip.md) · [Mitsubishi Electric Corporation Master/local module FX5-CCLGN-MS](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-master-local-module-fx5-cclgn-ms.md) · [Mitsubishi Electric Corporation CC-Link IE TSN interface board NZ81GN11-SX](https://agentprime.io/advisories/technology/mitsubishi-electric-corporation-cc-link-ie-tsn-interface-board-nz81gn11-sx.md)
- **Published:** 30 Jul 2026
- **Updated:** 5 Nov 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Mitsubishi) at 30 Jul 2026, 06:44 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-R model MXR300-16.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-R model MXR300-32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-R model MXR300-64.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-R model MXR500-128.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-R model MXR500-256.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100-8-N32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100-8-P32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100-16-N32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100-16-P32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100S-N32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100S-P32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100S-8-N32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100S-8-P32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100S-16-N32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC MX Controller MX-F model MXF100S-16-P32.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Master/local module RJ71GN11-T2.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Master/local module RJ71GN11-SX.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Master/local module RJ71GN11-EIP.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Master/local module FX5-CCLGN-MS.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: CC-Link IE TSN interface board NZ81GN11-SX.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: CC-Link IE TSN interface board NZ81GN11-T2.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion module RD78G4.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion module RD78G8.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion module RD78G16.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion module RD78G64.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion module RD78GHV.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion module RD78GHW.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion module FX5-40SSC-G.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion module FX5-80SSC-G.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC iQ-L Series Motion Module LD78G4.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: MELSEC iQ-L Series Motion module LD78G16.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Motion Control Board MR-EM441G.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Block-type remote module NZ2GN2S1-32D.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Block-type remote module NZ2GN2S1-32T.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Block-type remote module NZ2GN2S1-32TE.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Block-type remote module NZ2GN2S1-32DT.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Block-type remote module NZ2GN2S1-32DTE.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Block-type remote module NZ2GN2B1-32D.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Block-type remote module NZ2GN2B1-32T.
  - affected: `all versions`
  - Other versions: unaffected
- Vendor: Mitsubishi Electric Corporation. Product: Block-type remote module NZ2GN2B1-32TE.
  - affected: `all versions`
  - Other versions: unaffected

And 82 more products. The full list is on the CVE record: <https://www.cve.org/CVERecord?id=CVE-2026-13584>

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.1 High, CVSS 4.0: `CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N`, from CNA (Mitsubishi)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0019, the 8th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 30 Jul 2026, 06:44 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-13584)
- 30 Jul 2026, 07:16 UTC: [Confirmed by NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-13584)

## Sources

- [CVE List: CVE-2026-13584](https://www.cve.org/CVERecord?id=CVE-2026-13584)
- [NVD: CVE-2026-13584](https://nvd.nist.gov/vuln/detail/CVE-2026-13584)

### References from the CNA

- <https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2026-005_en.pdf> (vendor-advisory)
- <https://jvn.jp/vu/JVNVU98879231/> (government-resource)
- <https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-07> (government-resource)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-13584>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-13584/>. Everything for agents: <https://agentprime.io/llms.txt>.