Topic

PLC Security: news, advisories and analysis

6 articlesUpdated 27 Sep 2026

CyberSecureToday covers PLC Security across 6 articles published between 18 Sep 2026 and 27 Sep 2026. The coverage includes 6 vulnerability advisories. 6 advisories are rated critical or high severity.

Stories on PLC Security most often intersect with IEC 62443, SCADA and Industrial OT, with Industrial, OT & IoT the most affected sector. The most recent story, “Siemens LOGO! Soft Comfort Hardcoded Encryption Key Exposes Industrial PLC Project Files CVE-2026-57262”, was published 27 Sep 2026. Every article is listed below, newest first, with the affected products, severity and remediation guidance in each piece.

Latest coverage

ThreatsIndustrial & OTHigh
Siemens LOGO! Soft Comfort Hardcoded Encryption Key Exposes Industrial PLC Project Files CVE-2026-57262
CISA Advisory ICSA-26-225-13 warns of hardcoded encryption keys and unsalted password hashes in Siemens LOGO! Soft Comfort engineering software.
Mei-Lin Chen27 Sep 20268 min read
ThreatsIndustrial & OTCritical
OpenPLC Runtime v3 Flaw Enables Remote Controller Hijacking in Industrial Networks
CISA ICS advisory ICSA-26-265-09 details critical buffer overflow and authentication bypass flaws in OpenPLC Runtime v3, allowing remote process disruption.
Daniel Okafor24 Sep 202616 min read
ThreatsIndustrial & OTCritical
Schneider Electric Modicon M580 Authentication Flaw Risks Industrial Process Takeover
Schneider Electric issues advisory SEVD-2026-251-04 for critical CVSS 9.2 flaw CVE-2026-3869 in Modicon M580 controllers enabling unauthenticated process takeover.
CST Editorial Desk20 Sep 202615 min read
ThreatsIndustrial & OTCritical
Threat Actors Weaponize AI Tooling and S7comm to Target Siemens S7 Industrial Controllers
CISA, NSA, and the FBI issue joint advisory AA26-231A warning of active campaigns targeting Siemens S7 series PLCs using automated S7comm protocol exploitation.
Mei-Lin Chen19 Sep 202613 min read
ThreatsIndustrial & OTCritical
Mitsubishi Electric GX Works3 Authentication Bypass Exposes Industrial PLCs to Memory Manipulation Attacks
Mitsubishi Electric and CISA issue critical advisory ICSA-26-260-02 for GX Works3 and Motion Control Settings software enabling in-memory block password bypass and PLC logic tampering.
Mei-Lin Chen19 Sep 202612 min read
ThreatsIndustrial & OTCritical
Mitsubishi Electric CC-Link IE TSN Protocol Flaws Expose Factory Automation Cells
CISA issues ICS-CERT advisory ICSA-26-211-07 warning of critical protocol implementation flaws in Mitsubishi Electric CC-Link IE TSN industrial controllers.
Tom Verhoeven18 Sep 202610 min read

Latest coverage

Siemens LOGO! Soft Comfort Hardcoded Encryption Key Exposes Industrial PLC Project Files CVE-2026-57262

OpenPLC Runtime v3 Flaw Enables Remote Controller Hijacking in Industrial Networks

Schneider Electric Modicon M580 Authentication Flaw Risks Industrial Process Takeover

Threat Actors Weaponize AI Tooling and S7comm to Target Siemens S7 Industrial Controllers

Mitsubishi Electric GX Works3 Authentication Bypass Exposes Industrial PLCs to Memory Manipulation Attacks

Mitsubishi Electric CC-Link IE TSN Protocol Flaws Expose Factory Automation Cells