Read the docs
TI-2026-79054 Aliases CVE-2026-100420GHSA-fjpw-4x7c-9fcw

Information disclosure in the cloud-client daemon of TP-Link Deco BE63

Priority LOW 29CWE-202Published · Updated

Key facts

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

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

Summary

A sensitive information disclosure flaw in the cloud-client daemon of TP-Link Deco BE63 V2.0 lets an authenticated attacker retrieve the plaintext TP-Link ID account password. An attacker with high privileges on the device can use the exposed password to compromise the associated cloud account and perform unauthorized actions as the affected user. The weakness is classified as CWE-202.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

A sensitive information disclosure vulnerability in the cloud-client daemon of Deco BE63 allows authenticated attackers to retrieve the plaintext TP-Link ID account password.  Successful exploitation may allow attackers to compromise the associated cloud account and perform unauthorized actions on behalf of the affected user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00155 4th percentileScored 2026-11-07
Fix Fixed Deco BE63 V2.0 (TP-Link Systems Inc.): 1.3.3 Build 26071612

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-LinkDeco BE63 V2.0before 1.3.3 Build 260716121.3.3 Build 26071612Patch availableCNA
  • Deco BE63 V2.0 VendorTP-Link Affected before 1.3.3 Build 26071612 Fixed in 1.3.3 Build 26071612 Patch available CNA

Remediation

Update TP-Link Deco BE63 V2.0 to version 1.3.3 Build 26071612 or later, which fixes all versions from 0 before 1.3.3 Build 26071612.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA Deco BE63 V2.0 (TP-Link Systems Inc.) Fixed in 1.3.3 Build 26071612

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-100420
  2. 2026-10-22 Alias added: GHSA-fjpw-4x7c-9fcw
  3. 2026-10-23 Priority changed: MEDIUM → LOW
  4. 2026-10-30 CISA SSVC decision points changed

References

Patch 1

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