CVE-2020-8423: tp-link tl-wr841n_firmware Classic Buffer Overflow

Vulnerability summary

CVE-2020-8423 is a high (CVSS 9.0) Classic Buffer Overflow vulnerability in tp-link tl-wr841n_firmware. EPSS estimates a 9.35% chance of exploitation in the next 30 days, higher than 95.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 02-04-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

A buffer overflow in the httpd daemon on TP-Link TL-WR841N V10 (firmware version 3.16.9) devices allows an authenticated remote attacker to execute arbitrary code via a GET request to the page for the configuration of the Wi-Fi network.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.