CVE-2026-8764

HIGH 7.2

H3C Magic B3 aspForm UpdateWanParams buffer overflow

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

11th

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.

CWE	CWE-120 CWE-119
Vendor	h3c
Product	magic b3
Published	May 17, 2026
Last Updated	May 18, 2026

Stay Ahead of the Next One

Get instant alerts for h3c magic b3

Be the first to know when new high vulnerabilities affecting h3c magic b3 are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

H3C / Magic B3

100R002

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 yyy0032 (VulDB User) VulDB CNA Team