| Title | Tenda AC10 V4 US_AC10V4.0si_V16.03.10.10_multi_TDE01 Stack-based Buffer Overflow |
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| Description | Multiple stack-based buffer overflow vulnerabilities exist in the R7WebsSecurityHandler function (0x0043dea0) in /bin/httpd of Tenda AC10 V4 firmware V16.03.10.10. User-controlled input from websGetVar() flows into strcpy() at 0x0043f6d0 and 0x0043fba4, and into sprintf() at 0x0043f768 and 0x004404a4, without bounds checking. As a pre-authentication handler, all paths are reachable without credentials, allowing a remote attacker to corrupt the stack and achieve arbitrary code execution. |
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| Source | ⚠️ https://github.com/somanyerrors/tenda-ac10v4-vulnerabilities/blob/main/findings/CRITICAL-02-buffer-overflows-r7websecurityhandler.md |
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| User | CoreNode (UID 96566) |
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| Submission | 03/18/2026 16:22 (4 months ago) |
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| Moderation | 04/04/2026 15:21 (17 days later) |
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| Status | Duplicate |
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| VulDB entry | 321809 [Tenda AC10 4.0/16.03.10.09 R7WebsSecurityHandler Password stack-based overflow] |
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| Points | 0 |
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