CVE-2026-13584Patch

LOWCVSS 7.1 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Mitsubishi Electric MELSEC MX Controller MX-R model, MELSEC MX Controller MX-F model, Master/local module, CC-Link IE TSN interface board, Motion module, MELSEC iQ-L Series Motion Module, Motion Control Board, Block-type remote module, Block-type remote module with safety functions, Analog-Digital converter module, Digital-Analog converter module, CC-Link IE TSN compatible coupler, FPGA module, Tension meter, AC Servo MELSERVO-J5, AC Servo MELSERVO-JET, Liner Track System MTR-S series Linear track control module, Inverter FR-A800/F800/E800 Series, Industrial Robot CR800-D series controller Network Base Card, CC-Link IE TSN expansion unit, CC-Link IE TSN-CC-Link IE Field Network bridge module, CC-Link IE TSN-AnyWireASLINK bridge module, Energy Measuring Unit CC-Link IE TSN Communication Unit, GOT3000 Series, CC-Link IE TSN Communication Unit, Motion Control Software, CC-Link IE TSN Communication Software for Windows, Analysis Support Software MELSOFT VIMA, Master/Local module Designated communication LSI DeviceKit, Remote Station Communication LSI with GbE-PHY, CC-Link IE TSN Master/Local module Designated communication LSI SDK, and Remote station software development kit allows an attacker with access to a CC-Link IE TSN network to tamper with communication data (control input/output values) by sending specially crafted packets under specific timing conditions. This could allow the attacker to cause a denial-of-service (DoS) condition in the affected product by interfering with its control function or causing it to operate incorrectly.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-924

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 6 mentions across 5 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 3 signals
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • Peaked at 2 mentions on most recent observed day (2026-09-18)
  • 6 total mentions across 5 days

Deep dive

Activity timeline6 mentions / 5d
01122Mentions · 2026-07-30: 1Mentions · 2026-08-04: 1Mentions · 2026-08-05: 1Mentions · 2026-08-07: 1Mentions · 2026-09-18: 2Patch / Workaround · 2026-08-04: 1Patch / Workaround · 2026-08-05: 1Patch / Workaround · 2026-09-18: 1Technical Details · 2026-07-30: 1Technical Details · 2026-09-18: 107-3008-0408-0508-0709-18
Signal classification2 categories
Patch
466.7%
Disclosure
233.3%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-07-301
Disclosure1
2026-08-041
Patch1
2026-08-051
Patch1
2026-08-071
Patch1
2026-09-182
Disclosure1Patch1
Full discourse6 posts
  • Windows Forum@windowsforum
    Disclosure

    🚨 Mitsubishi’s CC-Link IE TSN flaw lets attackers on the same network tamper with industrial control traffic—and there’s still no fix. “Air-gapped” is doing a lot of work here. https://windowsforum.com/security-alerts.84/cve-2026-13584-no-fix-for-mitsubishi-cc-link-ie-tsn-traffic-tampering.440958/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #IndustrialControlSystems #Cisa #MitsubishiElectric #Cve202613584 https://t.co/FtWRyHfa6Y

    Post summary

    The tweet alerts to a Mitsubishi CC‑Link IE TSN vulnerability that permits on‑network traffic tampering and notes a lack of any fix, but offers no PoC, exploit, or active exploitation evidence.

    0001059
    1.3K followersView on X
  • CyberWorldOps@CyberWorldOps
    Patch

    Mitsubishi CC-Link IE TSN flaw CVE-2026-13584 allows on-segment attackers to tamper with industrial control traffic via crafted packets. Review CISA Update A and mitigate. #ICSSecurity #OTSecurity #Vulnerability https://cyberworldops.eu/en/mitsubishi-protocol-flaw-exposes-industrial-control-traffic-to-on

    Post summary

    The tweet describes a Mitsubishi CC-Link IE TSN vulnerability (CVE-2026-13584) that permits on-segment attackers to alter industrial control traffic using crafted packets, and recommends reviewing CISA Update A to mitigate the risk.

    0000037
    10 followersView on X
  • NEXSIGHT@NEXSIGHTNEWS
    Disclosure

    三菱電機の産業用ネットワーク「CC-Link IE TSN」に通信改ざんとDoSの脆弱性 — CVE-2026-13584、CVSS 7.1でPLC・サーボ・ロボット制御など121の型名が対象 https://cyber.nexsight.co/articles/2026/09/18/mitsubishi-cc-link-ie-tsn-cve-2026-13584-dos-tampering-2026-09-18/

    Post summary

    The article announces a new vulnerability (CVE‑2026‑13584) in Mitsubishi Electric’s CC‑Link IE TSN industrial network, detailing communication tampering and DoS risks with CVSS 7.1 across 121 device types. No PoC, exploit tool, or active exploitation is confirmed in the provided text.

    0000094
    74 followersView on X
  • ケイ | IT・セキュリティ系副業Webライター@Teeeda_worker
    Patch

    【警告】三菱電機CC-Link IE TSNに脆弱性、制御データ改ざんを防ぐ3つの対策 https://www.cybernote.click/2026/08/03/mitsubishi-cc-link-ie-tsn-cve-2026-13584/ #IT #Security #cybersecurity

    Post summary

    The post warns of a CVE‑2026‑13584 vulnerability in Mitsubishi's CC‑Link IE TSN and suggests three countermeasures to prevent control data tampering.

    0000074
    211 followersView on X
  • ケイ | IT・セキュリティ系副業Webライター@Teeeda_worker
    Patch

    【警告】三菱電機CC-Link IE TSNに脆弱性、制御データ改ざんを防ぐ3つの対策 https://www.cybernote.click/2026/08/03/mitsubishi-cc-link-ie-tsn-cve-2026-13584/ #IT #Security #cybersecurity

    Post summary

    The post alerts to a CVE affecting Mitsubishi Electric CC‑Link IE TSN and outlines three mitigation measures, but it does not provide technical details, PoC, or exploit code.

    0000094
    211 followersView on X
  • ケイ | IT・セキュリティ系副業Webライター@Teeeda_worker
    Patch

    【警告】三菱電機CC-Link IE TSNに脆弱性、制御データ改ざんを防ぐ3つの対策 https://www.cybernote.click/2026/08/03/mitsubishi-cc-link-ie-tsn-cve-2026-13584/ #IT #Security #cybersecurity

    Post summary

    The post warns of a new CVE (CVE-2026-13584) affecting Mitsubishi Electric's CC‑Link IE TSN and states that three countermeasures are available to mitigate control‑data tampering.

    0000057
    211 followersView on X

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