CVE-2026-2909

HIGH

Tenda HG9 300001138 - Buffer Overflow

Title source: llm
STIX 2.1

Description

A vulnerability was detected in Tenda HG9 300001138. This affects an unknown part of the file /boaform/formPing of the component Diagnostic Ping Endpoint. Performing a manipulation of the argument pingAddr results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.

References (5)

Core 5
Core References
Permissions Required, VDB Entry vdb-entry technical-description
https://vuldb.com/?id.347218
Permissions Required, VDB Entry signature permissions-required
https://vuldb.com/?ctiid.347218
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.755211
Issue Tracking exploit issue-tracking
https://github.com/QIU-DIE/cve-nneeww/issues/11
Various Sources product
https://www.tenda.com.cn/

Scores

CVSS v3 8.8
EPSS 0.0011
EPSS Percentile 29.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-121 CWE-119
Status published
Products (1)
tenda/hg9_firmware 300001138
Published Feb 22, 2026
Tracked Since Feb 22, 2026