CVE-2026-8764
H3C Magic B3 aspForm UpdateWanParams buffer overflow
HIGH 7.3EPSS 0.9%
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.
- Affected
- H3C · Magic B3
- CVSS v4.0 VULDB
- 7.3 HIGH
CVSS: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/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:X/V:X/RE:X/U:X - CVSS v3.1 VULDB
- 7.2 HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 VULDB
- 8.3 HIGH
AV:N/AC:L/Au:M/C:C/I:C/A:C - EPSS
- 0.85% chance of exploitation in the next 30 days, 58th percentile
- Published
- 2026-05-17
- Updated
- 2026-05-18
Proof-of-concept exploits (1)
- yyyy0031/CVE/issues/10★ · 2026-04-23