CVE-2026-7607

HIGH

TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow

Title source: cna

Description

A security vulnerability has been detected in TRENDnet TEW-821DAP 1.12B01. Impacted is the function auto_update_firmware of the component Firmware Udpate. The manipulation of the argument str leads to buffer overflow. The attack may be initiated remotely. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling". This vulnerability only affects products that are no longer supported by the maintainer.

References (4)

Core 4

Core References

Patch patch

https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_BO.md

View Patch ZIP pw:eip

Vdb Entry, Technical Description vdb-entry technical-description

VDB-360564 | TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow

https://vuldb.com/vuln/360564

Signature, Permissions Required signature permissions-required

VDB-360564 | CTI Indicators (IOB, IOC, IOA)

https://vuldb.com/vuln/360564/cti

Third Party Advisory third-party-advisory

Submit #806214 | Trendnet TEW-821DAP v1.12B01 CWE-120 Buffer Copy without Checking Size of Input

https://vuldb.com/submit/806214

Scores

CVSS v3 8.8

EPSS 0.0008

EPSS Percentile 23.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-119 CWE-120

Status published

Products (2)

TRENDnet/TEW-821DAP 1.12B01

trendnet/tew-821dap_firmware 1.12b01

Published May 02, 2026

Tracked Since May 02, 2026