Security Experts:

Connect with us

Hi, what are you looking for?



ICS Patch Tuesday: Siemens, Schneider Electric Address Nearly 50 Vulnerabilities

Industrial giants Siemens and Schneider Electric released a total of 15 advisories on Tuesday to address nearly 50 vulnerabilities discovered in their products.


Industrial giants Siemens and Schneider Electric released a total of 15 advisories on Tuesday to address nearly 50 vulnerabilities discovered in their products.


Siemens has released nine advisories addressing 27 vulnerabilities. Based on CVSS score, the most important, with a “critical” severity rating, is CVE-2021-45106. This flaw, related to hardcoded credentials, exposes the database associated with the SICAM TOOLBOX II engineering solution.

Another important advisory describes three high-severity denial-of-service (DoS) vulnerabilities that can be exploited without authentication to target the company’s controllers.

High-severity security holes have also been fixed in SIMATIC, SINEMA and SCALANCE products, which all use the same third-party strongSwan component. While these flaws have been confirmed to allow DoS attacks, one of them may also allow remote code execution in certain circumstances.

Vulnerabilities that can be exploited by tricking the targeted user into opening a specially crafted file have been patched or mitigated in Solid Edge, JT2Go, Teamcenter Visualization, and Simcenter Femap. An attacker could exploit these weaknesses for DoS attacks or remote code execution.

Siemens has also released an advisory to inform customers about a high-severity OpenSSL flaw affecting many of its products. While patches are available for some products, for others the vendor has only made available mitigations and it does not plan on releasing updates.

Medium-severity issues have been addressed in SINEMA Remote Connect Server, Spectrum Power 4, and SIMATIC WinCC and PCS.

Schneider Electric

Schneider Electric has published six advisories describing 20 vulnerabilities.

A total of eight issues, many rated “critical” and “high severity,” have been found in the Interactive Graphical SCADA System (IGSS), which is used for monitoring and controlling industrial processes. The flaws can lead to remote code execution, data disclosure, and loss of control over the SCADA system.

The vulnerabilities were discovered by Tenable and Vyacheslav Moskvin, who reported his findings through Trend Micro’s Zero Day Initiative (ZDI). While ZDI has yet to make its advisories public, Tenable has already released technical information and proof-of-concept (PoC) exploits.

Critical and high-severity issues have also been found in Schneider’s spaceLYnk, Wiser For KNX, and fellerLYnk products.

Schneider has also released advisories to describe high- and medium-severity vulnerabilities in its EcoStruxure EV Charging Expert, Easergy P40, Harmony/Magelis iPC, and EcoStruxure Geo SCADA Expert products. Exploitation of these weaknesses could lead to unauthorized system access, local privilege escalation, disruptions, or loss of protection.

Related: ICS Patch Tuesday: Siemens, Schneider Electric Address 40 Vulnerabilities

Related: ICS Patch Tuesday: Siemens and Schneider Electric Address Over 50 Vulnerabilities

Written By

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join this webinar to learn best practices that organizations can use to improve both their resilience to new threats and their response times to incidents.


Join this live webinar as we explore the potential security threats that can arise when third parties are granted access to a sensitive data or systems.


Expert Insights

Related Content


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Application Security

Drupal released updates that resolve four vulnerabilities in Drupal core and three plugins.

Risk Management

The supply chain threat is directly linked to attack surface management, but the supply chain must be known and understood before it can be...


Apple has released updates for macOS, iOS and Safari and they all include a WebKit patch for a zero-day vulnerability tracked as CVE-2023-23529.

Cloud Security

VMware vRealize Log Insight vulnerability allows an unauthenticated attacker to take full control of a target system.

Application Security

A CSRF vulnerability in the source control management (SCM) service Kudu could be exploited to achieve remote code execution in multiple Azure services.

IoT Security

Lexmark warns of a remote code execution (RCE) vulnerability impacting over 120 printer models, for which PoC code has been published.

CISO Strategy

Cybersecurity-related risk is a top concern, so boards need to know they have the proper oversight in place. Even as first-timers, successful CISOs make...