CVE-2026-12339

medium

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.

References

https://www.tp-link.com/kr/support/download/tl-mr100/v3.20/#Firmware

https://www.tp-link.com/en/support/faq/5237/

https://www.tp-link.com/en/support/download/tl-mr6400/v8/#Firmware

https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware

https://www.tp-link.com/en/support/download/tl-mr150/v3.20/#Firmware

https://www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmware

https://www.tp-link.com/en/support/download/archer-mr600/v2/#Firmware

https://www.tp-link.com/en/support/download/archer-mr200/v7/#Firmware

Details

Source: Mitre, NVD

Published: 2026-08-10

Updated: 2026-08-25

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Severity: Critical

CVSS v4

Base 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

Severity: Medium

EPSS

EPSS: 0.0031