High severity · published May 2, 2026
CVE-2026-7606
TRENDnet TEW-821DAP Firmware Update new_gui_update_firmware data authenticity
8.1
CVSS
0.2%
EPSS
No
On KEV
Description
A weakness has been identified in TRENDnet TEW-821DAP 1.12B01. This issue affects the function find_hwid/new_gui_update_firmware of the component Firmware Update Handler. Executing a manipulation of the argument dest can lead to insufficient verification of data authenticity. The attack can be launched remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. 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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
TEW-821DAP · TRENDnet
1.12B01 · source: vendor
TF
Tew-821dap Firmware · Trendnet
1.12b01 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7606
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7606
Exploit
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_Auth.md
Third Party Advisory
https://vuldb.com/submit/806213
Third Party Advisory
https://vuldb.com/vuln/360563
Permissions Required
https://vuldb.com/vuln/360563/cti
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