CVE-2026-12339

Authenticated Arbitrary File Write Vulnerability in multiple devices

Published Aug 10, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
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. 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.
Type Values Removed Values Added
First Time appeared Tp-link
Tp-link archer Mr200 V07
Tp-link archer Mr600 V2
Tp-link tl-mr6400 V5.3
Vendors & Products Tp-link
Tp-link archer Mr200 V07
Tp-link archer Mr600 V2
Tp-link tl-mr6400 V5.3
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Authenticated Arbitrary File Write Vulnerability in multiple devices
Weaknesses CWE-22
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TPLink
Published
Updated
Aug 25, 2026, 11:31 PM
Reserved
Jun 15, 2026, 3:51 PM
Status
Awaiting Analysis
Published
Aug 10, 2026, 7:17 PM
Modified
Oct 23, 2026, 8:10 PM