CVE-2025-9813 Tenda CH22 SetSambaConf formSetSambaConf buffer overflow
Remote attackers can trigger a buffer overflow in the Tenda CH22 router's Samba configuration interface, 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-2025-9813?
CVE-2025-9813 is a high-severity memory corruption vulnerability in Tenda CH22, published on 2 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in Tenda CH22 1.0.0.1. This issue affects the function formSetSambaConf of the file /goform/SetSambaConf. The manipulation of the argument samba_userNameSda leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2025-9813?
It affects 1 product.
Products include Tenda Ch22 Firmware.
How do I fix CVE-2025-9813?
No fix has been published for CVE-2025-9813 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-2025-9813 being exploited?
There is no known exploitation of CVE-2025-9813 in the wild and no public exploit code.
Other vulnerabilities in Tenda CH22
- CVE-2025-11418 Tenda CH22 HTTP Request AdvSetWrlsafeset formWrlsafeset stack-based overflow
- CVE-2025-11423 Tenda CH22 SafeEmailFilter formSafeEmailFilter memory corruption
- CVE-2026-5604 Tenda CH22 Parameter CertLocalPrecreate formCertLocalPrecreate stack-based overflow
- CVE-2026-5605 Tenda CH22 WrlExtraSet formWrlExtraSet stack-based overflow
- CVE-2026-5204 Tenda CH22 Parameter webtypelibrary formWebTypeLibrary stack-based overflow
Sources
Also known as GHSA-4c98-xmr9-5fq8.