CVE-2026-3169 Tenda F453 httpd SafeEmailFilter fromSafeEmailFilter buffer overflow
A buffer overflow in the Tenda F453 router's httpd service allows remote attackers to execute arbitrary code or cause a 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-2026-3169?
CVE-2026-3169 is a high-severity memory corruption vulnerability in Tenda F453, published on 25 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security vulnerability has been detected in Tenda F453 1.0.0.3. This impacts the function fromSafeEmailFilter of the file /goform/SafeEmailFilter of the component httpd. The manipulation of the argument page leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.
Which versions are affected by CVE-2026-3169?
It affects 1 product.
Products include Tenda F453 Firmware.
How do I fix CVE-2026-3169?
No fix has been published for CVE-2026-3169 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-2026-3169 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3169 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-cv4r-qfj3-hv3v.