| Title | Trendnet TEW-821DAP v1.12B01 CWE-120 Buffer Copy without Checking Size of Input ('Classic Buf |
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| Description | During the firmware udpate process, there is buffer overflow vulnerability in the function sub_41EC14 of program ssi. In the construction of nslookup command, the command string is written into a buffer with size of 2 bytes。 However, the size of the command string "nslookup ${host} > /tmp/nslookup" is 33 bytes. Therefore, a buffer overflow vulnerability occurs without any external input. |
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| Source | ⚠️ https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_BO3.md |
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| User | IOT_Res (UID 81722) |
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| Submission | 05/29/2026 08:54 (1 month ago) |
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| Moderation | 07/11/2026 12:12 (1 month later) |
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| Status | Accepted |
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| VulDB entry | 377791 [TRENDnet TEW-821DAP 1.12B01 ssi /goform/tools_nslookup sub_41EC14 buffer overflow] |
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| Points | 20 |
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