Mitsubishi Electric CC-Link IE TSN Vulnerability Allows Network-Based DoS in Industrial Controllers
CISA advisory ICSA-26-211-07 details CVE-2026-13584 affecting multiple MELSEC controllers and modules; update available.
Key Takeaways
- CVE-2026-13584 affects Mitsubishi Electric CC-Link IE TSN communication protocol across a wide range of MELSEC controllers and modules.
- Exploitation requires network access to the same segment and specific timing conditions, but could lead to denial-of-service or incorrect operation.
- Mitsubishi Electric has released Update A to address the vulnerability; organizations should apply it promptly.
- No public exploitation has been reported as of the advisory date.
- Network segmentation and access controls are recommended to reduce exposure.
Related Security News
Official MCP Python SDK Flaw Can Let Malicious Servers Steal OAuth Credentials
The maintainers of the official MCP Python SDK disclosed a security vulnerability that could allow a malicious server to trick applications into divulging OAuth credentials. The issue affects the handling of client secrets, authorization codes, and PKCE proof keys when communicating with token endpoints.
CISA Adds Two Citrix NetScaler Vulnerabilities to Known Exploited Catalog
The Cybersecurity and Infrastructure Security Agency (CISA) has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog based on evidence of active exploitation. CVE-2026-88771 involves improper input validation and CVE-2026-88772 involves improper restriction of operations within the bounds of a memory buffer, both affecting Citrix NetScaler products. The additions trigger remediation requirements under Binding Operational Directive 26-04 for Federal Civilian Executive Branch agencies.
