| Titel | WAVLINK NU516U1 2026-05-15 (build 708c073-mt7628) Command Injection |
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| Beschreibung | WAVLINK NU516U1 has an OS command injection vulnerability in the `adm.cgi` init handler. The `set_sys_adm` page handler stores the admin password to UCI config without sanitization. At boot time, the init handler reads the password back and interpolates it into a double-quoted shell command via `sprintf()` → `system()`. An authenticated attacker can set the password to `$(cmd)` which is evaluated by the shell when `system()` executes the resulting string at next boot, achieving persistent code execution as root.
Unlike typical command injection where the payload executes immediately, this is a stored injection: the payload persists in flash config and triggers on every boot cycle. |
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| Quelle | ⚠️ https://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report3.md |
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| Benutzer | oduoke (UID 98772) |
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| Einreichung | 06.06.2026 12:32 (vor 4 Monaten) |
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| Moderieren | 02.08.2026 22:34 (2 months later) |
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| Status | Duplikat |
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| VulDB Eintrag | 385418 [Wavlink WL-NU516U1 708c073-mt7628 Admin Password adm.cgi set_sys_adm erweiterte Rechte] |
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| Punkte | 0 |
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