Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-15469

Severity CVSS v4.0:
HIGH
Type:
CWE-321 Use of Hard-coded Cryptographic Key
Publication date:
24/08/2026
Last modified:
24/08/2026

Description

The use of<br /> hard-coded cryptographic key vulnerability has been identified in the mesh<br /> functionality of Deco XE75 v3, XE5300 v3.6 and WE10800 v3.6. <br /> A shared RSA-512 mesh group private key is present in the affected<br /> firmware and is used by the mesh protocol for node authentication.  An attacker who obtains the firmware image<br /> and has local network access may be able to authenticate as a mesh node without<br /> possessing a device-specific credential.<br /> <br /> <br /> <br /> <br /> <br /> Successful<br /> exploitation may allow an unauthenticated adjacent attacker to impersonate a<br /> trusted mesh node and bypass mesh node authentication, which may permit unauthorized<br /> changes to device or mesh configuration, affecting confidentiality, integrity<br /> and availability.

Impact

Vector 4.0
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L CVSS v4.0 Severity and Metrics:

Base Score: 7.70 HIGH
Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Attack Requirements (AT): Present
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): Low
Integrity (SI): Low
Availability (SA): Low

Base Score 4.0
7.70
Severity 4.0
HIGH

References to Advisories, Solutions, and Tools