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CVE-2026-6563 - Vulnerability Analysis

HighCVSS: 8.8

Last Updated: April 19, 2026

H3C Magic B1 - Buffer Overflow

Published: April 19, 2026Updated: April 19, 2026Remote Exploitable

Overview

H3C Magic B1 <= 100R004 contains a buffer overflow caused by manipulation of the "param" argument in SetAPWifiorLedInfoById function in /goform/aspForm, letting remote attackers cause memory corruption, exploit requires crafted request.

Severity & Score

Severity: High

CVSS Score: 8.8

Impact

Remote attackers can cause memory corruption, potentially leading to denial of service or remote code execution.

Mitigation

Update to the latest available version.

References

https://github.com/K4ptor/H3C-routers-vulnerability/
https://vuldb.com/submit/789531
https://vuldb.com/vuln/358200
https://vuldb.com/vuln/358200/cti

Related Resources

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Details

CVE ID: CVE-2026-6563
Severity: High
CVSS Score: 8.8
Type: buffer_overflow
Status: new

CWE

CWE-119

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H