| Title | D-Link Router FW120B05_decode Memory Corruption |
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| Description | D-Link DIR-878 contains a stack-based buffer overflow in the SetWan3Settings handler. The handler copies the attacker-controlled value with Primary and Secondary parameters into a fixed-size stack buffer using sprintf without validating its length. An oversized value causes stack memory corruption and reliably crashes the web management service. |
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| Source | ⚠️ https://github.com/Amalll-Sec/router-vulnerability-research/blob/main/advisories/d-link/dir-878/SetWan3Settings/README.md |
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| User | AmaIIl (UID 29184) |
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| Submission | 08/05/2026 05:09 (1 month ago) |
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| Moderation | 09/13/2026 07:09 (1 month later) |
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| Status | Accepted |
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| VulDB entry | 403226 [D-Link DIR-878 120B05 WAN Settings SetWan3Settings Primary/Secondary stack-based overflow] |
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| Points | 18 |
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