CVE-2026-12339
Authenticated Arbitrary File Write Vulnerability in multiple devices
- State
- Published
- Severity
- 6.9 Medium
- Published
- Aug 10, 2026
- Updated
- Aug 25, 2026
- Reserved
- Jun 15, 2026
Description
A Zip Slip vulnerability in the WebUI ISP Upgrade functionality allows arbitrary file write via a crafted archive containing directory traversal sequences. An authenticated administrator may overwrite arbitrary files on the system.Successful exploitation may allow arbitrary file to be overwritten on the underlying system, affecting system integrity and availability.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N | TPLink |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
TL-MR6400 v5.3TP-Link Systems Inc. |
|
Archer MR600 v2TP-Link Systems Inc. |
|
Archer MR200 v7TP-Link Systems Inc. |
|
TL-MR6400 v8.0TP-Link Systems Inc. |
|
TL-MR150 v3.20TP-Link Systems Inc. |
|
TL-MR100 v3.20TP-Link Systems Inc. |
|
References
- https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmwarepatch
- https://www.tp-link.com/en/support/download/archer-mr600/v2/#Firmwarepatch
- https://www.tp-link.com/en/support/download/archer-mr200/v7/#Firmwarepatch
- https://www.tp-link.com/en/support/faq/5237/vendor-advisory
- https://www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmwarepatch
- https://www.tp-link.com/en/support/download/tl-mr150/v3.20/#Firmwarepatch
- https://www.tp-link.com/en/support/download/tl-mr6400/v8/#Firmwarepatch
- https://www.tp-link.com/kr/support/download/tl-mr100/v3.20/#Firmwarepatch
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