High severity · published Apr 19, 2026
CVE-2026-6581
H3C Magic B1 aspForm SetMobileAPInfoById buffer overflow
8.8
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MB
Magic B1 · H3C
100R004 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6581
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6581
github.com
https://github.com/hmKunlun/H3Cc/blob/main/h3c.md
vuldb.com
https://vuldb.com/submit/790977
vuldb.com
https://vuldb.com/vuln/358216
vuldb.com
https://vuldb.com/vuln/358216/cti
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