Vulnerability · Published Mar 8, 2026 · Assigned by VulDB

CVE-2026-3701H3C Magic B1 aspForm Edit_BasicSSID_5G buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in Magic B1 from H3C. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.8%top 43.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security vulnerability has been detected in H3C Magic B1 up to 100R004. Affected by this vulnerability is the function Edit_BasicSSID_5G of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
H3C	Magic B1	100R004

Weakness: CWE-120, CWE-119 · 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

References

VDB-349647 | H3C Magic B1 aspForm Edit_BasicSSID_5G buffer overflow vdb-entry, technical-description
VDB-349647 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #765771 | New H3C Technologies Co., Ltd. Magic B1 Magic B1<=100R004 Buffer Overflow third-party-advisory
https://github.com/saltedfisholdxu/vul/blob/main/Magic%20B1/6_b1-report.md exploit