CVE-2025-29329 Memory corruption in n/a

Critical 9.8 Published 12 Jan 2026 Updated 5 Jul 2026

Remote attackers can execute arbitrary code on Sagemcom F@st 3686 routers via a buffer overflow in the IPP service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-29329?

CVE-2025-29329 is a critical memory corruption vulnerability in n/a, published on 12 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Buffer Overflow in the ippprint (Internet Printing Protocol) service in Sagemcom F@st 3686 MAGYAR_4.121.0 allows remote attacker to execute arbitrary code by sending a crafted HTTP request.

Weakness: CWE-120

Which versions are affected by CVE-2025-29329?

It affects 1 product.

Products include Sagemcom F\@st 3686 Firmware.

How do I fix CVE-2025-29329?

No fix has been published for CVE-2025-29329 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-2025-29329 being exploited?

There is no known exploitation of CVE-2025-29329 in the wild and no public exploit code.

Sources

Also known as GHSA-whj7-f2cg-8pv5.