CVE-2021-28846: trendnet tew-755ap_firmware

Vulnerability summary

CVE-2021-28846 is a medium (CVSS 6.5) vulnerability in trendnet tew-755ap_firmware. EPSS estimates a 0.81% chance of exploitation in the next 30 days, higher than 56.5% of scored vulnerabilities.

Timeline

1. 10-08-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03, which could let a remote malicious user cause a denial of service due to a logic bug at address 0x40dcd0 when calling fprintf with "%s: key len = %d, too long\n" format. The two variables seem to be put in the wrong order. The vulnerability could be triggered by sending the POST request to apply_cgi with a long and unknown key in the request body.

• CWE-134Use of Externally-Controlled Format StringThe product uses a function that accepts a format string as an argument, but the format string originates from an external source.