CVE-2026-3399 Tenda F453 httpd GstDhcpSetSer fromGstDhcpSetSer buffer overflow
A buffer overflow in the Tenda F453 router's httpd service allows remote attackers to execute arbitrary code via the GstDhcpSetSer endpoint.
- 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-2026-3399?
CVE-2026-3399 is a high-severity memory corruption vulnerability in Tenda F453, published on 1 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was identified in Tenda F453 1.0.0.3. Affected by this vulnerability is the function fromGstDhcpSetSer of the file /goform/GstDhcpSetSer of the component httpd. The manipulation of the argument dips leads to buffer overflow. The attack may be initiated remotely. The exploit is publicly available and might be used.
Which versions are affected by CVE-2026-3399?
It affects 1 product.
Products include Tenda F453 Firmware.
How do I fix CVE-2026-3399?
No fix has been published for CVE-2026-3399 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-2026-3399 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3399 exists.
Other vulnerabilities in Tenda F453
- CVE-2026-5021 Tenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflow
- CVE-2026-4551 Tenda F453 Parameters SafeClientFilter fromSafeClientFilter memory corruption
- CVE-2026-4552 Tenda F453 Parameters VirtualSer fromVirtualSer memory corruption
- CVE-2026-4553 Tenda F453 Parameters Natlimit fromNatlimit stack-based overflow
- CVE-2026-3726 Tenda F453 webExcptypemanFilter fromwebExcptypemanFilter stack-based overflow
Sources
Also known as GHSA-qgr9-jc5r-hw74.