Read the docs
TI-2026-04398 Aliases CVE-2026-5040GHSA-6vqq-hcvj-cx94

Weak Password Hashing Mechanism in TP-Link Deco M5

Priority LOW 32CWE-916Published · Updated

Key facts

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

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

Summary

TP-Link Deco M5 v1 uses a weak password hashing mechanism to store user credentials. An attacker who obtains the password hash through system compromise or privileged access could perform brute-force or dictionary attacks. Successful exploitation may result in disclosure of authentication credentials, enabling unauthorized access to device management functions, depending on the privileges associated with the recovered password. The primary security impact is loss of confidentiality.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00133 2nd percentileScored 2026-11-07
Fix Fixed Deco M5 Deco M5 V1 (TP-Link Systems Inc.): 1.9.4 Build 20260312 Rel.17129

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 M5 Deco M5 V1before 1.9.4 Build 20260312 Rel.171291.9.4 Build 20260312 Rel.17129Patch availableCNA
  • Deco M5 Deco M5 V1 VendorTP-Link Affected before 1.9.4 Build 20260312 Rel.17129 Fixed in 1.9.4 Build 20260312 Rel.17129 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tp-link:deco_m5_firmware:*:*:*:*:*:*:*:*before 1.9.4VulnerableTP-Link
cpe:2.3:h:tp-link:deco_m5:1.0:*:*:*:*:*:*:*1.0Running onTP-Link
  • cpe:2.3:o:tp-link:deco_m5_firmware:*:*:*:*:*:*:*:* Versions before 1.9.4 Vulnerable ·TP-Link
  • cpe:2.3:h:tp-link:deco_m5:1.0:*:*:*:*:*:*:* Versions 1.0 Running on ·TP-Link

Remediation

  • Fix · CNA Deco M5 Deco M5 V1 (TP-Link Systems Inc.) Fixed in 1.9.4 Build 20260312 Rel.17129

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5040
  2. 2026-10-03 Alias added: GHSA-6vqq-hcvj-cx94

References

Advisory 1

Other 2

Sources

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