CVE-2025-14879CWE-119CWE-121

Tenda WH450 HTTP Request onSSIDChange stack-based overflow

Critical · published December 18, 2025

CVSS v4.0
9.3
EPSS
7%
Percentile
93.9
In the wild
Unconfirmed
What it is

🚨 A sneaky buffer overflow in Tenda WH450 could let attackers remotely crash your device, all because of a single manipulated request! 🔥 Think of it like leaving a suitcase unzipped while packing for a trip — one wrong move, and everything spills out. Here, the argument ‘ssid_index’ is the unzipped part, letting attackers exploit the overflow and take control. This vulnerability could lead to catastrophic system crashes or even allow an attacker to execute arbitrary code on your device. If exploited, they could potentially manipulate your network settings or worse, gain access to sensitive data. Your devices could be rendered useless, just like a suitcase that’s burst open with contents scattered everywhere!

Put simply

Think of it like leaving a suitcase unzipped while packing for a trip — one wrong move, and everything spills out. Here, the argument ‘ssid_index’ is the unzipped part, letting attackers exploit the overflow and take control. The flaw lies in the Tenda WH450's HTTP Request Handler, specifically in the /goform/onSSIDChange function. By manipulating the 'ssid_index' argument, a stack-based buffer overflow occurs, allowing remote attackers to potentially execute harmful code.

What to do

This vulnerability could lead to catastrophic system crashes or even allow an attacker to execute arbitrary code on your device. If exploited, they could potentially manipulate your network settings or worse, gain access to sensitive data. Your devices could be rendered useless, just like a suitcase that’s burst open with contents scattered everywhere! To protect your network, patch the Tenda WH450 firmware to the latest version as soon as it’s available. Additionally, ensure that your device isn't exposed to the internet unless absolutely necessary. Regularly monitor your network for any unusual activity. You've got this! By following these steps, you'll keep your devices and data secure. 🛡️

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.06659 · 93.9th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2025-12-18T17:02Z
EPSS history
Timeline
  • 18 DEC 17:02Z
    Tenda WH450 HTTP Request onSSIDChange stack-based overflow
    cvelistv5