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critical·Product Based Web Vulnerabilities·Updated Jan 3, 2024

CVE-2021-41653 Scanner

Detects 'Remote Code Execution (RCE)' vulnerability in TP-Link TL-WR840N EU v5 affects v. TL-WR840N(EU)_V5_171211.

Est. Time~10 seconds
Scan TypeSingle Scan
Targetsdomain, ipv4, subdomain
CostFree
2.3k
Times Used
continuous scan runs
4.3k
Continuously Checked
assets under CS
0
Vulnerabilities Found
confirmed findings
References
CVECVE-2021-41653
9.8
CVSS

The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.

Attack Vector
-
Privileges Req.
-
User Interaction
-
Affected
n/aby n/a
n/a
Updated Aug 21, 2026View on NVD →
Detail

The TP-Link TL-WR840N EU v5 router, designed for home and small office use, is a popular wireless networking product that allows users to connect to the Internet with ease. This router enables users to connect wired and wireless devices to the network simultaneously, providing fast and reliable Internet speeds. Its main purpose is to provide a stable and secure Internet connection for home and small office users.

However, recently, a critical vulnerability has been found in this product. The CVE-2021-41653 vulnerability is a critical flaw that allows attackers to remotely execute malicious code through a crafted payload in an IP address input field. This vulnerability can be exploited without any authentication, which means that anyone with access to the Internet can use it to compromise the router.

This vulnerability can lead to a wide range of malicious activities, such as executing arbitrary code on the router, establishing a persistent backdoor, stealing sensitive information, or even causing the router to crash or stop working entirely. Attackers can use this vulnerability to gain access to the router's administrative panel and take over the network, leading to potential data theft or network disruption.

In conclusion, security is vital for any digital asset, and it is crucial to stay up-to-date with the latest vulnerabilities. Thanks to the pro features of the s4e.io platform, individuals can easily identify vulnerabilities in their digital assets and take the necessary steps to address them. Stay proactive and secure, and protect your digital assets from potential threats.

 

REFERENCES

Solution Advice

To protect against this vulnerability, users should take the following precautions:

  • Update the firmware of the router to the latest version available.
  • Disable remote access to the router's administrative panel if not required.
  • Restrict access to the IP address input field on the router.
  • Use strong and complex passwords for the router's administrative panel.
  • Keep an eye on the network traffic for any suspicious activity.

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