Siemens Industrial Edge hit by Node2Shell flaw
A critical out-of-bounds write in the Brotli library (CVE-2026-111497) affects multiple Siemens Industrial Edge Management components; patches available for some, mitigations needed for others.
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What to check
- Applies to
- The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- CISA lists CVE-2026-111497 as exploited in the wild.
Siemens has released an advisory addressing CVE-2026-111497, dubbed Node2Shell, a critical out-of-bounds write vulnerability in the Brotli compression library bundled within several Siemens Industrial Edge Management (IEM) products. The vulnerability carries a CVSS v3 score of 9.8, indicating it could be remotely exploitable with significant impact if the affected functionality is reachable. Siemens states that installations without Management or Device Applications are not affected because the vulnerable Brotli functionality is not exposed, but systems with these applications installed should apply mitigations until patches are released.
Affected products include Cloud Connector Configurator, Common Configurator (on IEM and Edge), Data Flow Monitoring, Databus Configurator, DataXess Configurator, Edge OPC UA Server Configurator, Flow Creator Configurator, Industrial Edge Hub, and Industrial Edge Management Cloud. Siemens has already shipped fixed versions for several of these (e.g., Cloud Connector Configurator <1.24.3, Data Flow Monitoring <3.0.18, Databus Configurator <4.0.1, DataXess Configurator <1.5.7, Edge OPC UA Server Configurator <2.3.10, Flow Creator Configurator <1.15.1), while other products remain fully affected across all versions pending further fixes. Siemens-managed cloud services (Industrial Edge Hub and Industrial Edge Management Cloud) already have firewall/WAF protections in place.
This advisory is a CISA republication of Siemens ProductCERT SSA-443410 and affects the Critical Manufacturing sector worldwide, with Siemens headquartered in Germany. No evidence of in-the-wild exploitation is mentioned in the advisory. Defenders operating Siemens Industrial Edge environments should inventory which Management or Device Applications are installed, apply available patches immediately, and follow Siemens' interim mitigations and general ICS network segmentation guidance (isolating control networks, restricting internet exposure, and using secured VPN access) for products awaiting a fix.
Mentioned in this report
Source reporting: https://www.cisa.gov/news-events/ics-advisories/icsa-26-316-03
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