Connect with us

Hi, what are you looking for?



Critical Flaws Found in Siemens Telecontrol, Building Automation Products

Siemens informed customers this week that critical vulnerabilities have been found in some of its telecontrol and building automation products, and revealed that some SIMATIC systems are affected by a high severity flaw.

Siemens informed customers this week that critical vulnerabilities have been found in some of its telecontrol and building automation products, and revealed that some SIMATIC systems are affected by a high severity flaw.

One advisory published by the company describes several critical and high severity flaws affecting Siveillance and Desigo building automation products. The security holes exist due to the use of a vulnerable version of a Gemalto license management system (LMS).

The bugs affect Gemalto Sentinel LDK and they can be exploited for remote code execution and denial-of-service (DoS) attacks.

The vulnerabilities were discovered by researchers at Kaspersky Lab and disclosed in January. The security firm warned at the time that millions of industrial and corporate systems may be exposed to remote attacks due to their use of the vulnerable Gemalto product.

Siemens warned at the time that more than a dozen versions of the SIMATIC WinCC Add-On were affected. The company has now informed customers that some of its building automation products are impacted as well, including Siveillance Identity and SiteIQ Analytics, and Desigo XWP, CC, ABT, Configuration Manager, and Annual Shading.

The German industrial giant has advised customers to update the LMS to version 2.1 SP4 (2.1.681) or newer in order to address the vulnerabilities.

Learn More at SecurityWeek’s ICS Cyber Security Conference

Advertisement. Scroll to continue reading.

A separate advisory published by Siemens this week informs customers of a critical vulnerability affecting TIM 1531 IRC, a communication module launched by the company nearly a year ago. The module connects remote stations based on SIMATIC controllers to a telecontrol control center through the Sinaut ST7 protocol.

“A remote attacker with network access to port 80/tcp or port 443/tcp could perform administrative operations on the device without prior authentication. Successful exploitation could allow to cause a denial-of-service, or read and manipulate data as well as configuration settings of the affected device,” Siemens explained.

The company said there had been no evidence of exploitation when it published its advisory on Tuesday.

A third advisory published by Siemens this week describes a high severity flaw discovered by external researchers in SIMATIC PCS 7, SIMATIC WinCC, SIMATIC WinCC Runtime Professional, and SIMATIC NET PC products.

The vulnerability allows an attacker to cause a DoS condition on the impacted products by sending specially crafted messages to their RPC service. Patches or mitigations have been made available by Siemens for each of the affected systems.

Related: Siemens Patches Flaws in SIMATIC Controllers, Mobile Apps

Related: Siemens Releases BIOS Updates to Patch Intel Chip Flaws

Related: Oil and Gas Sector in Middle East Hit by Serious Security Incidents

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.

SecurityWeek’s Threat Detection and Incident Response Summit brings together security practitioners from around the world to share war stories on breaches, APT attacks and threat intelligence.


Securityweek’s CISO Forum will address issues and challenges that are top of mind for today’s security leaders and what the future looks like as chief defenders of the enterprise.


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...

Data Breaches

OpenAI has confirmed a ChatGPT data breach on the same day a security firm reported seeing the use of a component affected by an...

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...


The latest Chrome update brings patches for eight vulnerabilities, including seven reported by external researchers.


Patch Tuesday: Microsoft warns vulnerability (CVE-2023-23397) could lead to exploitation before an email is viewed in the Preview Pane.


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.

IoT Security

A group of seven security researchers have discovered numerous vulnerabilities in vehicles from 16 car makers, including bugs that allowed them to control car...

IoT Security

A vulnerability affecting Dahua cameras and video recorders can be exploited by threat actors to modify a device’s system time.