Description
A security vulnerability has been detected in H3C Magic B3 up to 100R002. This affects the function UpdateWanParams of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack may be performed from remote. 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.
References (4)
Core 4
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-364389 | H3C Magic B3 aspForm UpdateWanParams buffer overflow
https://vuldb.com/vuln/364389
Signature, Permissions Required signature
permissions-required
VDB-364389 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/364389/cti
Third Party Advisory third-party-advisory
Submit #811373 | New H3C Technologies Co., Ltd. H3C Magic B3 <= 100R002 Buffer Overflow
https://vuldb.com/submit/811373
Exploit exploit
issue-tracking
https://github.com/yyyy0031/CVE/issues/1
Scores
CVSS v3
7.2
EPSS
0.0005
EPSS Percentile
15.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
CWE-120
Status
published
Products (1)
H3C/Magic B3
100R002
Published
May 17, 2026
Tracked Since
May 18, 2026