CVE-2026-7101 Tenda F456 httpd WrlclientSet fromWrlclientSet buffer overflow
A buffer overflow in the Tenda F456 router's httpd service allows remote attackers to execute arbitrary code via the WrlclientSet interface.
- 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-2026-7101?
CVE-2026-7101 is a high-severity memory corruption vulnerability in Tenda F456, published on 27 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in Tenda F456 1.0.0.5. This affects the function fromWrlclientSet of the file /goform/WrlclientSet of the component httpd. The manipulation leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2026-7101?
It affects 1 product.
Products include Tenda F456 Firmware.
How do I fix CVE-2026-7101?
No fix has been published for CVE-2026-7101 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-2026-7101 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7101 exists.
Other vulnerabilities in Tenda F456
- CVE-2026-7078 Tenda F456 httpd SetIpBind fromSetIpBind buffer overflow
- CVE-2026-7079 Tenda F456 httpd AdvSetWan fromAdvSetWan buffer overflow
- CVE-2026-7080 Tenda F456 httpd PPTPUserSetting fromPPTPUserSetting buffer overflow
- CVE-2026-7081 Tenda F456 httpd GstDhcpSetSer fromGstDhcpSetSer buffer overflow
- CVE-2026-7082 Tenda F456 httpd WrlExtraSet formWrlExtraSet buffer overflow
Sources
Also known as GHSA-m972-h54r-qh55.