High severity · published Mar 8, 2026
CVE-2026-3701
H3C Magic B1 aspForm Edit_BasicSSID_5G buffer overflow
8.8
CVSS
0.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MB
Magic B1 · H3C
100R004 · source: vendor
MB
Magic B1 Firmware · H3c
through 100r004 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3701
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3701
Exploit
https://github.com/saltedfisholdxu/vul/blob/main/Magic%20B1/6_b1-report.md
Permissions Required
https://vuldb.com/?ctiid.349647
Third Party Advisory
https://vuldb.com/?id.349647
Third Party Advisory
https://vuldb.com/?submit.765771
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