CVE-2023-25218

Tenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the form_fast_setting_wifi_set function

Critical · published April 7, 2023

CVSS v3.1
9.8
EPSS
1%
Percentile
60.9
In the wild
Unconfirmed
What it is

🔥 A crafted payload could bring your Tenda AC5 router to its knees! 🚨 Think of your router as a busy restaurant kitchen. If someone hands over a poorly written recipe, it can confuse the chefs and halt service entirely, causing a massive backlog. In this case, the stack overflow in the form_fast_setting_wifi_set function is that recipe, leading to a Denial of Service (DoS) or worse. An attacker could exploit this vulnerability to crash the router, making your internet connection unavailable or even gain control over the device. Imagine your entire household left without Wi-Fi, just because someone sent a rogue request! This kind of disruption could be absolutely devastating.

Put simply

Think of your router as a busy restaurant kitchen. If someone hands over a poorly written recipe, it can confuse the chefs and halt service entirely, causing a massive backlog. In this case, the stack overflow in the form_fast_setting_wifi_set function is that recipe, leading to a Denial of Service (DoS) or worse. The CVE-2023-25218 vulnerability stems from a stack overflow issue within the form_fast_setting_wifi_set function of Tenda AC5 routers. By sending a specifically crafted payload, an attacker can manipulate the device's memory, resulting in a potential DoS or arbitrary code execution.

What to do

An attacker could exploit this vulnerability to crash the router, making your internet connection unavailable or even gain control over the device. Imagine your entire household left without Wi-Fi, just because someone sent a rogue request! This kind of disruption could be absolutely devastating. To protect yourself, immediately update your Tenda AC5 router to the latest firmware version, which will contain fixes for this vulnerability. Also, consider changing your default credentials and hardening your network settings to limit exposure to such attacks. You've got this! With these steps, you'll keep your network safe and sound. 🛡️

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
0.00959 · 60.9th percentile
Published
2023-04-07T00:00Z
EPSS history
Timeline
  • 07 APR 00:00Z
    Tenda AC5 US_AC5V1.0RTL_V15.03.06.28 was discovered to contain a stack overflow via the form_fast_setting_wifi_set function
    cvelistv5