CVE-2026-5046 Tenda FH1201 Parameter WrlExtraSet formWrlExtraSet stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Tenda FH1201 router's parameter handler, 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-2026-5046?
CVE-2026-5046 is a high-severity memory corruption vulnerability in Tenda FH1201, published on 29 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in Tenda FH1201 1.2.0.14(408). Affected is the function formWrlExtraSet of the file /goform/WrlExtraSet of the component Parameter Handler. Executing a manipulation of the argument GO can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used.
Which versions are affected by CVE-2026-5046?
It affects 1 product.
Products include Tenda Fh1201 Firmware.
How do I fix CVE-2026-5046?
No fix has been published for CVE-2026-5046 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-2026-5046 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5046 exists.
Other vulnerabilities in Tenda FH1201
- CVE-2024-42947 Command injection in n/a
- CVE-2026-5045 Tenda FH1201 Parameter WrlclientSet stack-based overflow
- CVE-2025-14994 Tenda FH1201/FH1206 HTTP Request webtypelibrary strcat stack-based overflow
- CVE-2025-14995 Tenda FH1201 SetIpBind sprintf stack-based overflow
- CVE-2025-7548 Tenda FH1201 SafeEmailFilter formSafeEmailFilter stack-based overflow
Sources
Also known as GHSA-47v2-mwmm-f564.