CVE-2026-7607
TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow
- State
- Published
- Severity
- 8.7 High
- Published
- May 2, 2026
- Updated
- May 4, 2026
- Reserved
- May 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X | VulDB |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R | VulDB |
| 3.0 | 8.8 High | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R | VulDB |
| 2.0 | 9.0 High | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:ND/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
TEW-821DAPTRENDnet |
|
References
- VDB-360564 | TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflowvdb-entrytechnical-description
- VDB-360564 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #806214 | Trendnet TEW-821DAP v1.12B01 CWE-120 Buffer Copy without Checking Size of Inputthird-party-advisory
- https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_BO.mdpatch
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