High severity · published May 2, 2026
CVE-2026-7607
TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow
8.8
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% 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-2026-7607
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7607
Exploit
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_BO.md
Third Party Advisory
https://vuldb.com/submit/806214
Third Party Advisory
https://vuldb.com/vuln/360564
Permissions Required
https://vuldb.com/vuln/360564/cti
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