CVE-2026-8764

A security vulnerability has been detected in H3C Magic B3 up to 100R002. This affects the function UpdateWanParams of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0

7.3CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

CVSS 3.1

7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-25)

CWEs

CWE-119, CWE-120

Published

2026-05-17

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

References

• https://github.com/yyyy0031/CVE/issues/1
• https://vuldb.com/submit/811373
• https://vuldb.com/vuln/364389
• https://vuldb.com/vuln/364389/cti

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