CVE-2021-20151

Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device

published December 30, 2021

CVSS
—
EPSS
2%
Percentile
75.7
In the wild
Unconfirmed
What it is

⚠️ A clever IP-based session management flaw could let an attacker crash your router party! 🎉 Think of it like a restaurant where anyone can walk in and sit at your table just by pretending to be you, as long as they know your usual spot. Instead of verifying who you are, the restaurant just checks your last table number and welcomes anyone back to that seat! If exploited, this vulnerability allows an attacker to hijack a user’s active session, potentially gaining full control over the router's management interface. They could modify settings, intercept network traffic, or even utilize the compromised network for further exploits. It's like handing over the keys to your digital fortress to a stranger!

Put simply

Think of it like a restaurant where anyone can walk in and sit at your table just by pretending to be you, as long as they know your usual spot. Instead of verifying who you are, the restaurant just checks your last table number and welcomes anyone back to that seat! This vulnerability in Trendnet AC2600 TEW-827DRU version 2.08B01 occurs because the router's management software relies solely on IP addresses for session management, failing to validate client cookies or tokens. This allows an attacker to hijack sessions if they can spoof the original user's IP address.

What to do

If exploited, this vulnerability allows an attacker to hijack a user’s active session, potentially gaining full control over the router's management interface. They could modify settings, intercept network traffic, or even utilize the compromised network for further exploits. It's like handing over the keys to your digital fortress to a stranger! To remediate this vulnerability, consider updating to the latest firmware version, if available, and using more secure session management methods that validate user credentials properly. Regularly monitoring connected devices and enabling firewall protections can also help mitigate risks. 🛡️ You've got this! By taking these steps, you can ensure your router is secure and keep those unwanted guests out! 🚀

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01611 · 75.7th percentile
Published
2021-12-30T21:31Z
EPSS history
Timeline
  • 30 DEC 21:31Z
    Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device
    cvelistv5