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Vulnerability record · CVE-2026-6581 · published 19 April 2026

CVE-2026-6581: Memory buffer overflow vulnerability

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.

7.4 CVSS 4.0 High EPSS 0.80% · top 45.0% CWE-119 · Memory buffer overflowCWE-120 · Classic buffer overflow Deferred
7.4CVSS 4.0 base score, v2 9.0
0.80%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/hmKunlun/H3Cc/blob/main/h3c.md
https://vuldb.com/submit/790977
https://vuldb.com/vuln/358216
https://vuldb.com/vuln/358216/cti

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Source: NIST National Vulnerability Database (record CVE-2026-6581), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.