Two high-severity vulnerabilities, CVE-2026-6563 and CVE-2026-6581, were disclosed in H3C Magic B1 devices running versions up to 100R004, exposing the products to remotely exploitable buffer overflows. Both flaws reside in the /goform/aspForm component and are triggered by crafted manipulation of the param argument, with CVE-2026-6563 affecting the SetAPWifiorLedInfoById function and CVE-2026-6581 affecting SetMobileAPInfoById.

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2 events from the most recent confirmed update back to the earliest known activity.
A new CVE entry documented a remotely exploitable buffer overflow in H3C Magic B1 devices up to version 100R004. The flaw affects the SetAPWifiorLedInfoById function in /goform/aspForm via manipulation of the param argument, and the disclosure stated an exploit may be used in the wild and that the vendor did not respond before publication.
A new CVE entry documented a remotely exploitable buffer overflow in H3C Magic B1 devices up to version 100R004. The flaw affects the SetMobileAPInfoById function in /goform/aspForm via manipulation of the param argument, and the disclosure noted that a public exploit exists and the vendor did not respond before publication.
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