CVE-2026-2909 — Improper Restriction of Operations within the Bounds of a Memory Buffer in HG9

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-121 — Stack-based Buffer Overflow3 documents3 sources
Severity
7.4HIGHNVD
EPSS
0.1%
top 73.32%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Tenda HG9Tenda HG9 Firmware
Timeline
PublishedFeb 22

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.

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected Packages2 packages

▶CVEListV5tenda/hg9300001138
▶NVDtenda/hg9_firmware300001138

🔴Vulnerability Details

2
CVEList
Tenda HG9 Diagnostic Ping Endpoint formPing stack-based overflow↗2026-02-22
▶
GHSA
GHSA-8pgv-26pm-rgm8: A vulnerability was detected in Tenda HG9 300001138↗2026-02-22
▶
CVE-2026-2909 — Tenda HG9 vulnerability | cvebase