Weak Password Hashing Mechanism in TP-Link Deco M5

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Summary

CVECVE-2026-5040
StatePUBLISHED
AssignerTPLink
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-14 19:18:03 UTC
Updated2026-07-15 11:16:33 UTC
DescriptionTP-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.

Risk And Classification

Primary CVSS: v4.0 7.1 HIGH from f23511db-6c3e-4e32-a477-6aa17d310630

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-916 | CWE-916 CWE-916 Use of Password Hash With Insufficient Computational Effort

VersionSourceTypeScoreSeverityVector
4.0f23511db-6c3e-4e32-a477-6aa17d310630Secondary7.1HIGHCVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS7.1HIGHCVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
High
Attack Requirements
None
Privileges Required
High
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TP-Link Systems Inc. Deco M5 Deco M5 V1 affected 1.9.4 Build 20260312 Rel.17129 custom Not specified

References

ReferenceSourceLinkTags
www.tp-link.com/en/support/download/deco-m5/v1 f23511db-6c3e-4e32-a477-6aa17d310630 www.tp-link.com
www.tp-link.com/us/support/faq/5190 f23511db-6c3e-4e32-a477-6aa17d310630 www.tp-link.com
www.tp-link.com/us/support/download/deco-m5/v1 f23511db-6c3e-4e32-a477-6aa17d310630 www.tp-link.com
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