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TI-2026-10604 Aliases CVE-2026-12339GHSA-www9-662g-pffv

Authenticated Arbitrary File Write Vulnerability in multiple devices

Priority LOW 31CWE-22Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00525 44th percentileScored 2026-11-07
Fix Fixed TL-MR6400 v5.3 (TP-Link Systems Inc.): (EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099nArcher MR600 v2 (TP-Link Systems Inc.): (EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n+4 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TP-LinkTL-MR6400 v5.3before (EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n(EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099nPatch availableCNA
TP-LinkArcher MR600 v2before (EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n(EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417nPatch availableCNA
TP-LinkArcher MR200 v7before (EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n(EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870nPatch availableCNA
TP-LinkTL-MR6400 v8.0before (EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n(EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978nPatch availableCNA
TP-LinkTL-MR150 v3.20before (EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727n(EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727nPatch availableCNA
TP-LinkTL-MR100 v3.20before (EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n; before 1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n,  Customized Software for South Korea KT; before 1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea Telenor(EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n, 1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n,  Customized Software for South Korea KT, 1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea TelenorPatch availableCNA
  • TL-MR6400 v5.3 VendorTP-Link Affected before (EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n Fixed in (EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n Patch available CNA
  • Archer MR600 v2 VendorTP-Link Affected before (EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n Fixed in (EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n Patch available CNA
  • Archer MR200 v7 VendorTP-Link Affected before (EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n Fixed in (EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n Patch available CNA
  • TL-MR6400 v8.0 VendorTP-Link Affected before (EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n Fixed in (EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n Patch available CNA
  • TL-MR150 v3.20 VendorTP-Link Affected before (EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727n Fixed in (EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727n Patch available CNA
  • TL-MR100 v3.20 VendorTP-Link Affected before (EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n; before 1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n,  Customized Software for South Korea KT; before 1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea Telenor Fixed in (EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n, 1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n,  Customized Software for South Korea KT, 1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea Telenor Patch available CNA

Remediation

  • Fix · CNA TL-MR6400 v5.3 (TP-Link Systems Inc.) Fixed in (EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n
  • Fix · CNA Archer MR600 v2 (TP-Link Systems Inc.) Fixed in (EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n
  • Fix · CNA Archer MR200 v7 (TP-Link Systems Inc.) Fixed in (EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n
  • Fix · CNA TL-MR6400 v8.0 (TP-Link Systems Inc.) Fixed in (EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n
  • Fix · CNA TL-MR150 v3.20 (TP-Link Systems Inc.) Fixed in (EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727n
  • Fix · CNA TL-MR100 v3.20 (TP-Link Systems Inc.) Fixed in (EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n, 1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n,  Customized Software for South Korea KT, 1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea Telenor

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-12339
  2. 2026-10-03 Alias added: GHSA-www9-662g-pffv

References

Patch 7

Advisory 1

  • TI-2023-16571 TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain… KEVCVSS 3.1HIGH 8.8
  • TI-2023-01313 Command injection in TP-Link Archer AX21 KEVCVSS 3.1HIGH 8.8
  • TI-2020-14907 TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the… KEVCVSS 3.1HIGH 8.8
  • TI-2025-08589 Authenticated RCE via Parental Control command injection KEVCVSS 4.0HIGH 8.6
  • TI-2015-02672 Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317… KEVCVSS 3.1HIGH 7.5
  • TI-2023-27456 Authentication bypass by spoofing in TP-Link TL-WR841N KEVCVSS 3.1MEDIUM 6.5
See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences