CVE-2026-2906 Tenda HG9 Samba Configuration Endpoint formSamba stack-based overflow
A remote attacker can trigger a stack-based buffer overflow in the Samba configuration endpoint of Tenda HG9 routers, potentially leading to arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2906?
CVE-2026-2906 is a high-severity memory corruption vulnerability in Tenda HG9, published on 22 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security flaw has been discovered in Tenda HG9 300001138. Affected is an unknown function of the file /boaform/formSamba of the component Samba Configuration Endpoint. The manipulation of the argument sambaCap results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.
Which versions are affected by CVE-2026-2906?
It affects 1 product.
Products include Tenda Hg9 Firmware.
How do I fix CVE-2026-2906?
No fix has been published for CVE-2026-2906 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-2906 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2906 exists.
Other vulnerabilities in Tenda HG9
- CVE-2022-30023 Command injection in n/a
- CVE-2026-2905 Tenda HG9 Wireless Configuration Endpoint formWlanSetup stack-based overflow
- CVE-2026-2907 Tenda HG9 GPON Configuration Endpoint formgponConf stack-based overflow
- CVE-2026-2908 Tenda HG9 Loopback Detection Configuration Endpoint formLoopBack stack-based overflow
- CVE-2026-2909 Tenda HG9 Diagnostic Ping Endpoint formPing stack-based overflow
Sources
Also known as GHSA-2hp3-cccc-h69r.