Stack-Based Buffer Overflow Vulnerability in H3C Magic B0 by H3C
CVE-2026-10259

8.7HIGH

Key Information:

Vendor

H3c
Status
Magic B0
Vendor
CVE Published:
1 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10259?

A vulnerability has been identified in the H3C Magic B0 device, specifically affecting versions up to 100R002. The issue arises within the SetMobileAPInfoById function of the /goform/aspForm file, where improper handling of the argument param enables attackers to exploit a stack-based buffer overflow. This vulnerability can be triggered remotely, posing significant risks to users and their systems. Despite being notified early, the vendor has not responded. To remediate, it is crucial to implement the necessary security measures and updates as they become available.

Affected Version(s)

Magic B0 100R002

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-10259 - Proof of Concept

References

https://vuldb.com/vuln/367539
vdb-entrytechnical-description
https://vuldb.com/vuln/367539/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10259
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Zheng (VulDB User)
VulDB CNA Team
.