Cyber Resilience

CVE-2021-28846

Medium

Published: 10 August 2021

Published
10 August 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0031 54.4th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-28846 is a medium-severity Use of Externally-Controlled Format String (CWE-134) vulnerability in Trendnet Tew-755Ap Firmware. Its CVSS base score is 6.5 (Medium).

Operationally, ranked in the top 45.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

"%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(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

trendnet
tew-755ap firmware
1.11b03
trendnet
tew-755ap2kac firmware
1.11b03
trendnet
tew-821dap2kac firmware
1.11b03
trendnet
tew-825dap firmware
1.11b03

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References