CVE-2021-39510

An issue was discovered in D-Link DIR816_A1_FW101CNB04 750m11ac wireless router, The HTTP request parameter is used in the handler function of…

published August 24, 2021

CVSS
—
EPSS
9%
Percentile
95.1
In the wild
Unconfirmed
What it is

⚠️ A crafty command injection vulnerability lurks in the D-Link DIR816 router, waiting for just the right HTTP request to unleash its chaos! 🔥 Think of this like a restaurant that lets customers write their own orders on the ticket, and if someone sneaks in a request for an extra side of mischief, they might just get it served. The router is trusting the order without checking it! An attacker could exploit this vulnerability to inject harmful commands into the router's system, which could lead to unauthorized access or potentially take control of network resources! This could compromise the integrity of your home network, opening the door to all sorts of trouble.

Put simply

Think of this like a restaurant that lets customers write their own orders on the ticket, and if someone sneaks in a request for an extra side of mischief, they might just get it served. The router is trusting the order without checking it! This vulnerability allows an attacker to construct a username string using shell metacharacters within the HTTP request parameter of the '/goform/form2userconfig.cgi' route, leading to command injection and unauthorized actions executed in the router's backend.

What to do

An attacker could exploit this vulnerability to inject harmful commands into the router's system, which could lead to unauthorized access or potentially take control of network resources! This could compromise the integrity of your home network, opening the door to all sorts of trouble. To protect your network, check for any firmware updates for the D-Link DIR816 router and apply them immediately. Additionally, ensure your router's configuration is locked down by disabling any unnecessary services and regularly audit user permissions. 🛡️ You've got this! Stay vigilant, follow these steps, and keep your network secure! 💪✨

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.08624 · 95.1th percentile
Published
2021-08-24T18:52Z
EPSS history
Timeline
  • 24 AUG 18:52Z
    An issue was discovered in D-Link DIR816_A1_FW101CNB04 750m11ac wireless router, The HTTP request parameter is used in the handler function of…
    cvelistv5