CVE-2025-29329

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…

Critical · published January 12, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
61.7
In the wild
Unconfirmed
What it is

🚨 A single crafted HTTP request is all it takes to trigger a buffer overflow in the Sagemcom F@st 3686's printing service! 🔥 Think of it like a restaurant where a customer orders way too many dishes at once — it overwhelms the kitchen, causing a spillover that can ruin the entire meal. Here, the overflow lets attackers cook up their own commands! If exploited, this vulnerability could allow an attacker to execute arbitrary code on the device, potentially leading to unauthorized access, data breaches, or even taking control of the entire network. Imagine an intruder walking in and being able to change the menu — or worse, the entire restaurant staff!

Put simply

Think of it like a restaurant where a customer orders way too many dishes at once — it overwhelms the kitchen, causing a spillover that can ruin the entire meal. Here, the overflow lets attackers cook up their own commands! This buffer overflow in the ippprint service occurs when overly long input is sent through HTTP requests, allowing attackers to manipulate memory and execute arbitrary code.

What to do

If exploited, this vulnerability could allow an attacker to execute arbitrary code on the device, potentially leading to unauthorized access, data breaches, or even taking control of the entire network. Imagine an intruder walking in and being able to change the menu — or worse, the entire restaurant staff! Immediately patch the Sagemcom F@st 3686 to the latest version to close this vulnerability. Regularly review your network settings and ensure proper input validation to help prevent such exploits. Don't forget to monitor for unusual activities! You've got this! Just follow these steps and you'll be a security hero in no time! 🦸

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00976 · 61.7th percentile
Published
2026-01-12T00:00Z
EPSS history
Timeline
  • 12 JAN 00:00Z
    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…
    cvelistv5