The Software Nobody Watches: Siemens License Server Flaws Expose Industry's Trust Blind Spot
The water treatment plant, the auto factory, and the power substation near you probably all run Siemens software — and the quiet program that checks whether that software is properly licensed just turned out to be a way in for attackers. CISA flagged multiple vulnerabilities in Siemens License Server that could let an attacker elevate privileges and read arbitrary files on the systems it runs on. Siemens has released a fix and is urging users to update.
Bottom Line
A pair of fixable flaws in an obscure licensing utility is not a crisis — Siemens has patched them, and there's no reported exploitation. But the story underscores an uncomfortable truth about industrial cybersecurity: the most dangerous software is often the software nobody thinks about, running with high privileges and low scrutiny. The trust we place in background utilities is becoming the preferred target, and the slow patch cycles of industrial environments give attackers a long window to take advantage.