CVE-2026-6581 Details
Description
A vulnerability was detected in H3C Magic B1 up to 100R004. Affected by this vulnerability is the function SetMobileAPInfoById of the file /goform/aspForm. Performing a manipulation of the argument param results in buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
A buffer overflow vulnerability has been identified in the H3C Magic B1 router, specifically in firmware versions through 100R004. The issue arises in the SetMobileAPInfoById function within the /goform/aspForm file. This vulnerability can be exploited remotely by manipulating the 'param' argument, leading to potential denial-of-service conditions or even remote code execution.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 19, 2026CISA-ADP
Assessed Apr 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/hmKunlun/H3Cc/blob/main/h3c.md | [email protected] | ExploitTechnical Description |
| https://vuldb.com/submit/790977 | [email protected] | Technical Description |
| https://vuldb.com/vuln/358216 | [email protected] | AdvisoryExploitTechnical Description |
| https://vuldb.com/vuln/358216/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| H3C Magic B1 | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 19, 2026 | New CVE Received | [email protected] |