| Title | Tenda CH22 V1.0.0.1 Command Injection |
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| Description | The Tenda CH22 V1.0.0.1 firmware has a command injection vulnerability in the formexeCommand function. The src variable receives the cmdinput parameter from a POST request and is later passed to the strcpy function. In this function, the src variable is passed as the s parameter.
The sub_4F634(path_buf, s, v1) then parses s and writes it into path_buf : If the field starts with /, it overwrites path_buf from the beginning; otherwise it appends starting at offset v1 (the end of the existing path_buf content). A trailing / and null terminator are added, and the result is stored back into path_buf.
However, since the Since user can control the input of cmdinput, the statemeant doSystemCmd("echo %s > /tmp/cmdTmp.txt", path_buf); can cause a command injection. |
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| Source | ⚠️ https://candle-throne-f75.notion.site/Tenda-CH22-formexeCommand-396df0aa11858036b0cdf7a7562d4a67 |
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| User | ysnysnysn (UID 86177) |
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| Submission | 07/07/2026 18:17 (2 months ago) |
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| Moderation | 08/23/2026 07:57 (2 months later) |
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| Status | Accepted |
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| VulDB entry | 394524 [Tenda CH22 1.0.0.1 /goform/exeCommand formexeCommand cmdinput command injection] |
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| Points | 17 |
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