CVE-2026-8764
H3C Magic B3 aspForm UpdateWanParams buffer overflow
Vexday Risk Score
41Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 8.6EPSS 0.5%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
17 May 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
H3C · Magic B3public PoCs found — 1
cve_referencegithub.com/yyyy0031/CVE/issues/1unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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