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TI-2026-00420 Aliases CVE-2026-0620GHSA-q4rj-q7j3-gxf6

L2TP over IPSec Encryption Failure on ArcherAXE75

Priority LOW 27CWE-693Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-693.

Summary

When configured as L2TP/IPSec VPN server, Archer AXE75 V1 may accept connections using L2TP without IPSec protection, even when IPSec is enabled.  This allows VPN sessions without encryption, exposing data in transit and compromising confidentiality.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00281 20th percentileScored 2026-11-07
Fix Fixed AXE75 (TP-Link Systems Inc.): <1.5.1 Build 20251202

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-LinkAXE75before <1.5.1 Build 20251202<1.5.1 Build 20251202Patch availableCNA
  • AXE75 VendorTP-Link Affected before <1.5.1 Build 20251202 Fixed in <1.5.1 Build 20251202 Patch available CNA

Remediation

  • Fix · CNA AXE75 (TP-Link Systems Inc.) Fixed in <1.5.1 Build 20251202

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-0620
  2. 2026-10-03 Alias added: GHSA-q4rj-q7j3-gxf6

References

Patch 2

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