CVE-2026-7099 Tenda F456 httpd QuickIndex formQuickIndex buffer overflow
Remote attackers can trigger a buffer overflow in the Tenda F456 router's httpd service via the QuickIndex form, potentially leading to code execution or denial of service.
- 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-2026-7099?
CVE-2026-7099 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 was detected in Tenda F456 1.0.0.5. The affected element is the function formQuickIndex of the file /goform/QuickIndex of the component httpd. Performing a manipulation of the argument mit_linktype results in buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2026-7099?
It affects 1 product.
Products include Tenda F456 Firmware.
How do I fix CVE-2026-7099?
No fix has been published for CVE-2026-7099 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-2026-7099 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7099 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-fw73-5j4x-x5jq.