PT-2026-41584 · H3C · Magic B3

Yyy0032 · Published 2026-05-17 · Updated 2026-05-18 · CVE-2026-8764

Positive Technologies (AI Summary)

CVSS v2.0

8.3

High

Base vector

AV:N/AC:L/Au:M/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions H3C Magic B3 versions prior to 100R002

Description A buffer overflow exists in the UpdateWanParams() function within the '/goform/aspForm' endpoint. This issue occurs when the param argument is manipulated, allowing a remote attacker to trigger the overflow.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability. As a temporary workaround, restrict access to the '/goform/aspForm' endpoint or avoid using the param argument within the UpdateWanParams() function.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-120

CWE-119

Related Identifiers

CVE-2026-8764

Affected Products

Magic B3

References · 9

• 🔥 https://github.com/yyyy0031/CVE/issues/1 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-8764 · Security Note
• https://vuldb.com/vuln/364389/cti · Note
• https://twitter.com/VulmonFeeds/status/2056151279903089146 · Twitter Post
• https://t.me/CVEtracker/54077 · Telegram Post
• https://t.me/cveNotify/163794 · Telegram Post
• https://vuldb.com/vuln/364389 · Note
• https://twitter.com/CVEnew/status/2056253262693577106 · Twitter Post
• https://vuldb.com/submit/811373 · Note