CVE-2026-76652
Description
An authenticated directory traversal vulnerability in file upload functionality has been identified in Archer MR600 (v2, v3 & v5) and TL-MR6400 v8. Due to insufficient validation of user-supplied file information, an authenticated remote attacker with access to the affected upload functionality could upload a specially crafted file and cause it to be written outside the intended directory. Successful exploitation could allow an authenticated remote attacker to write files to unintended locations, potentially overwriting or modifying files accessible to the affected service; arbitrary code execution has not been demonstrated.
How to fix
- TP-Link Systems Inc. TL-MR6400 v81.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n or later
- TP-Link Systems Inc. Archer MR600MR600(EU)_V3_1.4.0 Build 260827, MR600(EU)_V5_1.9.0 Build 260805, MR600(EU)_V2_1.12.0 Build 2600826 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| TP-Link Systems Inc. TL-MR6400 v8 | v < 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n | 1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n |
| TP-Link Systems Inc. Archer MR600 | v3 ≤ v < MR600(EU)_V3_1.4.0 Build 260827, v5 ≤ v < MR600(EU)_V5_1.9.0 Build 260805, v2 ≤ v < MR600(EU)_V2_1.12.0 Build 2600826 | MR600(EU)_V3_1.4.0 Build 260827, MR600(EU)_V5_1.9.0 Build 260805, MR600(EU)_V2_1.12.0 Build 2600826 |
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