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EPSS 0.1%top 83%

CVE-2026-6563: Buffer Overflow in H3C Magic B1

0
High
VulnerabilityCVE-2026-6563cvecve-2026-6563
Published: Sun Apr 19 2026 (04/19/2026, 08:30:14 UTC)
Source: CVE Database V5
Vendor/Project: H3C
Product: Magic B1

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.

CVSS v4.0

Score 8.7high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/27/2026, 00:26:04 UTC

Technical Analysis

This vulnerability in H3C Magic B1 up to version 100R004 involves a buffer overflow in the SetAPWifiorLedInfoById function within the /goform/aspForm file. The issue is triggered by manipulating an argument parameter remotely, potentially allowing an attacker to execute arbitrary code or cause a denial of service. The CVSS 4.0 base score is 8.7, indicating high severity with network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. The vendor was contacted but did not respond, and no official patch or remediation guidance is currently available.

Potential Impact

Successful exploitation of this vulnerability could allow remote attackers to cause a buffer overflow, potentially leading to arbitrary code execution or denial of service on the affected device. The high CVSS score reflects significant impact on confidentiality, integrity, and availability. However, no confirmed exploits in the wild have been reported to date.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded and no official patch is available, users should consider mitigating exposure by restricting network access to the affected device, especially from untrusted networks, until a fix is released.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-04-18T16:02:07.227Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 69e4964d19fe3cd2cd310932

Added to database: 4/19/2026, 8:46:05 AM

Last enriched: 4/27/2026, 12:26:04 AM

Last updated: 6/3/2026, 12:10:44 PM

Views: 131

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