CVE-2023-26806

Tenda W20E v15.11.0.6(US_W20EV4.0br_v15.11.0.6(1068_1546_841 is vulnerable to Buffer Overflow via function formSetSysTime,

Critical · published March 19, 2023

CVSS v3.1
9.8
EPSS
1%
Percentile
60.2
In the wild
Unconfirmed
What it is

🔥 A buffer overflow in Tenda W20E could leave your network wide open — it's like giving an intruder a master key to your home! Think of this vulnerability as a waiter who misreads a special order and serves an entire extra meal, causing chaos in the kitchen. The buffer overflow here lets attackers write beyond the allowed memory space, disrupting operations and opening doors for malicious payloads. An attacker could exploit this flaw to execute arbitrary code, potentially taking complete control of the device. This could lead to unauthorized access to your network, allowing them to snoop on sensitive data or even hijack connected devices. The consequences could be absolutely devastating!

Put simply

Think of this vulnerability as a waiter who misreads a special order and serves an entire extra meal, causing chaos in the kitchen. The buffer overflow here lets attackers write beyond the allowed memory space, disrupting operations and opening doors for malicious payloads. The vulnerability lies in the formSetSysTime function, which fails to properly validate input, allowing attackers to overflow the memory buffer. This flaw can be exploited to execute custom code or manipulate the device's behavior.

What to do

An attacker could exploit this flaw to execute arbitrary code, potentially taking complete control of the device. This could lead to unauthorized access to your network, allowing them to snoop on sensitive data or even hijack connected devices. The consequences could be absolutely devastating! To protect your network, update your Tenda W20E firmware to version 15.11.0.7 or later immediately. Regularly check for firmware updates and consider implementing additional network security measures to mitigate risks. You've got this! By acting quickly, you can secure your device and strengthen your defenses. 🛡️

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
0.00928 · 60.2th percentile
Published
2023-03-19T00:00Z
EPSS history
Timeline
  • 19 MAR 00:00Z
    Tenda W20E v15.11.0.6(US_W20EV4.0br_v15.11.0.6(1068_1546_841 is vulnerable to Buffer Overflow via function formSetSysTime,
    cvelistv5