High severity · published Apr 19, 2026
CVE-2026-6563
H3C Magic B1 aspForm SetAPWifiorLedInfoById buffer overflow
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability has been found in H3C Magic B1 up to 100R004. The affected element is the function SetAPWifiorLedInfoById of the file /goform/aspForm. The manipulation of the argument param leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the 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)0.5% · higher than 41% 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-2026-6563
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6563
github.com
https://github.com/K4ptor/H3C-routers-vulnerability/
vuldb.com
https://vuldb.com/submit/789531
vuldb.com
https://vuldb.com/vuln/358200
vuldb.com
https://vuldb.com/vuln/358200/cti
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