The STIB-MIVB Business Portal, accessed at https://stib-mivb.be , is a SAP NetWeaver-based management platform for company transit subscriptions. Recent patches for this portal address critical vulnerabilities, including CVE-2025-31324 and Remote Code Execution flaws, to protect user data and systems. Learn more about the portal and its security measures on the STIB-MIVB Business Portal page .

We advise all users to clear their browser cache if they experience any loading issues following the update.

The company added that the update did not impact real-time traveler information systems (e.g., route planners or live departure boards).

According to technical indicators, the patch addresses a potential privilege escalation flaw within the SAP NetWeaver Portal (suggested by the /irj/portal/ path structure). Such portals are used by STIB staff for scheduling, fleet management, and internal communications.

https://portail.stib-mivb.be/irj/portal

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