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Siemens IoT2050 Node-RED flaw is being used to plant command backdoors
The Hacker News reported that VulnCheck saw attempts to exploit CVE-2026-58115 on Siemens SIMATIC IoT2050 Advanced devices, after Siemens disclosed a CVSS 10.0 missing-authentication bug in August.
A maximum-severity flaw in Siemens SIMATIC IoT2050 Advanced industrial devices is being used in real attacks, The Hacker News reported, citing VulnCheck1.
The bug, CVE-2026-58115, scored 10.0 on CVSS and is missing authentication for a critical function on devices running Industrial OS with Node-RED, according to the report1. Siemens said in an August 2026 advisory that an unauthenticated remote attacker could create malicious flows and run code on the server with maximum privileges1.
Siemens said the issue is fixed in versions 4.3.4.1 or later1. As mitigations, the company recommended uninstalling Node-RED or hardening it, including HTTPS, credential or OAuth protection for the editor and admin API, and basic authentication for HTTP nodes and the dashboard, The Hacker News said1.
VulnCheck said that as of Oct. 30, 2026, it saw attackers try to use CVE-2026-58115 against its honeypot network to download and run a Linux bot1. "The attacker's request was a complete exploit," VulnCheck researcher Patrick Garrity said1.
The Hacker News, summarizing VulnCheck, said the malicious Node-RED flow ran a shell wrapper that fetched a binary, with a later two-stage pattern and other requests that opened an HTTP endpoint wired to command execution so operators could send commands later1. Garrity said that kind of backdoor can persist even if a memory-backed implant is lost on reboot1.
The report said some later payloads could not be retrieved, so their exact function is unknown1. How widely the scans hit production IoT2050 units, as opposed to honeypots, was not established in the article1.
