| Title | Netcore NR268 Router NR268-V1.7.121109.bin Insufficient Verification of Data Authenticity |
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| Description | The NR268 firmware authenticity check is forgeable. `mtd_write` accepts an image when bytes `0x20..0x2f` equal `MD5(MD5(file[0x50:]) || hardcoded_constant)` and does not verify a vendor signature, public key, or device secret. An attacker who can reach the firmware upload route can modify a valid image, recompute the accepted header locally, and install the forged firmware. |
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| Source | ⚠️ https://github.com/draw-ctf/report/blob/main/NR268/2026.08.19-netcore-nr268-firmware-forgery.md |
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| User | nebula (UID 101212) |
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| Submission | 09/14/2026 10:02 (28 days ago) |
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| Moderation | 10/11/2026 16:48 (27 days later) |
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| Status | Duplicate |
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| VulDB entry | 404944 [Netcore NR268 1.7.121109 Firmware Signature Validation put_file.cgi mtd_write data authenticity] |
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| Points | 0 |
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