CVE-2026-12339: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in TP-Link Systems Inc. TL-MR6400 v5.3
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 overwrite on the underlying system, affecting system integrity and availability.
CVE-2026-12339: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in TP-Link Systems Inc. TL-MR6400 v5.3
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 overwrite on the underlying system, affecting system integrity and availability.
CVSS v4.0
Score 6.9medium
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-06-15T15:51:52.827Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7a1b7bbf8831d5395475e1
Added to database: 08/10/2026, 18:42:03 UTC
Last updated: 08/10/2026, 18:42:03 UTC
Views: 1
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