CVE-2026-3274 Tenda F453 httpd L7Prot frmL7ProtForm buffer overflow
Remote attackers can trigger a buffer overflow in the Tenda F453 router's httpd service via the L7Prot 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-2026-3274?
CVE-2026-3274 is a high-severity memory corruption vulnerability in Tenda F453, published on 27 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security flaw has been discovered in Tenda F453 1.0.0.3. Affected by this issue is the function frmL7ProtForm of the file /goform/L7Prot of the component httpd. Performing a manipulation of the argument page results in buffer overflow. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.
Which versions are affected by CVE-2026-3274?
It affects 1 product.
Products include Tenda F453 Firmware.
How do I fix CVE-2026-3274?
No fix has been published for CVE-2026-3274 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-2026-3274 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3274 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-pcpr-68v2-x3jj.