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CVE-2021-28846

nvd nist
Published: Aug 10, 2021Modified: Jun 17, 2026

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6.5
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability: 2.8 / Impact: 3.6
Source: NVD

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.

Affected (4)

Trendnet
4 products
Tew 755ap Firmware
Tew 755ap2kac Firmware
Tew 821dap2kac Firmware
Tew 825dap Firmware
Configuration A
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Tew 755ap Firmware
Version 1.11b03
Running on/withPlatform Versions
Trendnet
Tew 755ap
All versions
Configuration B
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Tew 755ap2kac Firmware
Version 1.11b03
Running on/withPlatform Versions
Trendnet
Tew 755ap2kac
All versions
Configuration C
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Tew 821dap2kac Firmware
Version 1.11b03
Running on/withPlatform Versions
Trendnet
Tew 821dap2kac
All versions
Configuration D
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Tew 825dap Firmware
Version 1.11b03
Running on/withPlatform Versions
Trendnet
Tew 825dap
All versions

Related CWEs

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

References (2)

Source: cve@mitre.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.