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CVE-2026-8764

H3C Magic B3 aspForm UpdateWanParams buffer overflow

Published: May 17, 2026Updated: May 18, 2026 Sources: CVE List NVDCWE-119
NVD MITRE
7.2CVSSHIGH
EPSS Score
0.5%
Top 62.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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 Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-119CWE-120

Affected Products

Magic B3H3CNetworking Infrastructure
h3ccommercialCNNetworking Infrastructureaka h3c technologies

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/yyyy0031/CVE/issues/1
github.com
https://vuldb.com/submit/811373
vuldb.com
https://vuldb.com/vuln/364389
vuldb.com
and 1 more references View all →

Timeline

Published
May 17, 2026
Last Updated
May 18, 2026

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