Buffer overflow in H3c Magic B3
CVE-2025-10942
A vulnerability was identified in H3C Magic B3 up to 100R002. This affects the function AddMacList/EditMacList of the file /goform/aspForm. The manipulation of the argument param leads to buffer overflow. The attack can be initiated remote…
Vulnerability class: Buffer Overflow
EPSS: 0.004 (62.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R.
Affected products
- H3c Magic B3 — versions 100R002
Weakness classification (CWE)
References
- VDB-325812 | H3C Magic B3 aspForm EditMacList buffer overflow (vdb-entry, technical-description)
- VDB-325812 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #651813 | H3C Magic B3 <=100R002 Buffer Overflow (third-party-advisory)
- Submit #684667 | H3C Magic B3 Router V100R002 Buffer Overflow (Duplicate) (third-party-advisory)
- github.com/lin-3-start/lin-cve/blob/main/H3C+Magic+B3/H3C routers Buffer overfl… (related)
- github.com/lin-3-start/lin-cve/blob/main/H3C+Magic+B3/H3C routers Buffer overfl… (exploit)
Frequently asked questions
- What is CVE-2025-10942?
- CVE-2025-10942 is a high-severity vulnerability in H3c Magic B3, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2025-09-25.
- How severe is CVE-2025-10942?
- High severity. CVSS v3 base score is 8.8 out of 10.