CVE-2026-8764H3C Magic B3 aspForm UpdateWanParams buffer overflow
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No exploitation reported and no EPSS estimate yet.
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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
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
- Weakness (CWE)
- CWE-120, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- May 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
H3C Magic B3 h3c:magic_b3 | 100R002 | CNA record |
References
- https://vuldb.com/vuln/364389vdb-entry, technical-description
- https://vuldb.com/vuln/364389/ctisignature, permissions-required
- https://vuldb.com/submit/811373third-party-advisory
- https://github.com/yyyy0031/CVE/issues/1exploit, issue-tracking
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.