
Critical XSS Vulnerability in Siemens Teamcenter Enables Silent Account Takeover
Bishop Fox security researchers discovered a critical reflected cross-site scripting vulnerability (CVE-2026-58113) in Siemens Teamcenter's login redirect functionality in 2024. The flaw allows attackers to execute JavaScript in authenticated users' browsers through crafted URLs, requiring no user interaction beyond opening the link. During authorized testing, researchers weaponized the vulnerability to silently grant surrogate delegation privileges, enabling one account to act on behalf of another in the PLM system that manages critical engineering designs, bills of materials, and approval workflows for aircraft, vehicles, and industrial hardware. The vulnerability affects Teamcenter's /auth/login-redirect flow where user-controlled query parameters are reflected into HTML form attributes without proper encoding, and the page's automatic form submission triggers the injected code execution. This incident highlights the growing sophistication of application-layer attacks targeting industrial control systems and engineering environments, where a single compromised account can impact manufacturing approvals and intellectual property protection across aerospace and automotive sectors.
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