CVE-2026-9393: Buffer Overflow in H3C Magic B0
A vulnerability was found in H3C Magic B0 up to 100R002. This affects the function Edit_BasicSSID_5G of the file /goform/aspForm. Performing a manipulation of the argument param results in buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
AI Analysis
Technical Summary
This vulnerability in H3C Magic B0 (up to version 100R002) involves a buffer overflow in the Edit_BasicSSID_5G function within the /goform/aspForm file. Remote attackers can exploit this by manipulating an argument parameter, leading to a buffer overflow condition. The CVSS 4.0 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 has not provided any response or patch, and no official remediation is currently available.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker 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 risk to confidentiality, integrity, and availability of the system. No known exploits are reported in the wild yet, but a public exploit exists.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a patch, users should monitor official H3C channels for updates. Until a fix is available, consider restricting remote access to the affected function or device to trusted networks only to reduce exposure.
CVE-2026-9393: Buffer Overflow in H3C Magic B0
Description
A vulnerability was found in H3C Magic B0 up to 100R002. This affects the function Edit_BasicSSID_5G of the file /goform/aspForm. Performing a manipulation of the argument param results in buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS v4.0
Score 8.7high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in H3C Magic B0 (up to version 100R002) involves a buffer overflow in the Edit_BasicSSID_5G function within the /goform/aspForm file. Remote attackers can exploit this by manipulating an argument parameter, leading to a buffer overflow condition. The CVSS 4.0 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 has not provided any response or patch, and no official remediation is currently available.
Potential Impact
Successful exploitation of this vulnerability could allow a remote attacker 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 risk to confidentiality, integrity, and availability of the system. No known exploits are reported in the wild yet, but a public exploit exists.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a patch, users should monitor official H3C channels for updates. Until a fix is available, consider restricting remote access to the affected function or device to trusted networks only to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-24T06:11:03.604Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a134d09a5ae1af1aabc0d50
Added to database: 05/24/2026, 19:10:01 UTC
Last enriched: 05/31/2026, 20:36:35 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 73
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.