CVE-2026-6563— H3C Magic B1 aspForm SetAPWifiorLedInfoById buffer overflow
Quick assessment
Affected
H3C Magic B1
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
H3C Magic B1是中国新华三（H3C）公司的一款无线路由器。 H3C Magic B1 100R004及之前版本存在安全漏洞，该漏洞源于对文件/goform/aspForm中参数param的操作，可能导致缓冲区溢出。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-6563
Vulnerability Information
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Vulnerability Title
H3C Magic B1 aspForm SetAPWifiorLedInfoById buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in H3C Magic B1 up to 100R004. The affected element is the function SetAPWifiorLedInfoById of the file /goform/aspForm. The manipulation of the argument param leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
H3C Magic B1 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
H3C Magic B1是中国新华三（H3C）公司的一款无线路由器。 H3C Magic B1 100R004及之前版本存在安全漏洞，该漏洞源于对文件/goform/aspForm中参数param的操作，可能导致缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-6563
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2026-6563 (2)
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🔗 CVE-2026-6563 H3C Magic B1 aspForm SetAPWifiorLedInfoById buffer overflow Read full article vdb-entry technical-description
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Proof of Concept for CVE-2026-6563 (1)
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🔗 GitHub - K4ptor/H3C-routers-vulnerability: This vulnerability can cause a buffer overflow by routing /goform/aspForm and correctly controlling the param field, resulting in a denial of service attack or even remote code execution. The vulnerability is specifically triggered by SetAPWifiorLedInfoById. · GitHub Read full article exploit
Same Patch Batch · H3C · 2026-04-19 · 3 CVEs total
| CVE-2026-6581 | 8.8 HIGH | H3C Magic B1 aspForm SetMobileAPInfoById buffer overflow |
| CVE-2026-6560 | 8.8 HIGH | H3C Magic B0 aspForm Edit_BasicSSID buffer overflow |
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