CVE-2026-15469: CWE-321 Use of hard-coded cryptographic key in TP-Link Systems Inc. Deco XE75 v3 / XE5300 v3.6/ WE10800 v3.6
The use of hard-coded cryptographic key vulnerability has been identified in the mesh functionality of Deco XE75 v3, XE5300 v3.6 and WE10800 v3.6. A shared RSA-512 mesh group private key is present in the affected firmware and is used by the mesh protocol for node authentication. An attacker who obtains the firmware image and has local network access may be able to authenticate as a mesh node without possessing a device-specific credential. Successful exploitation may allow an unauthenticated adjacent attacker to impersonate a trusted mesh node and bypass mesh node authentication, which may permit unauthorized changes to device or mesh configuration, affecting confidentiality, integrity and availability.
AI Analysis
Technical Summary
CVE-2026-15469 describes a vulnerability in TP-Link Deco XE75 v3, XE5300 v3.6, and WE10800 v3.6 mesh devices where a hard-coded RSA-512 private key is embedded in the firmware. This key is used by the mesh protocol for authenticating nodes. An attacker who obtains the firmware image and has local network access can use this shared private key to impersonate a trusted mesh node, bypassing authentication mechanisms. This flaw allows unauthorized changes to device or mesh configurations, affecting the security properties of confidentiality, integrity, and availability.
Potential Impact
Successful exploitation enables an unauthenticated adjacent attacker to impersonate a trusted mesh node, bypassing mesh node authentication. This can lead to unauthorized modifications of device or mesh configurations, compromising confidentiality, integrity, and availability of the affected network mesh.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time. Until a patch is available, restrict local network access to trusted users and monitor for unauthorized mesh node activity.
CVE-2026-15469: CWE-321 Use of hard-coded cryptographic key in TP-Link Systems Inc. Deco XE75 v3 / XE5300 v3.6/ WE10800 v3.6
Description
The use of hard-coded cryptographic key vulnerability has been identified in the mesh functionality of Deco XE75 v3, XE5300 v3.6 and WE10800 v3.6. A shared RSA-512 mesh group private key is present in the affected firmware and is used by the mesh protocol for node authentication. An attacker who obtains the firmware image and has local network access may be able to authenticate as a mesh node without possessing a device-specific credential. Successful exploitation may allow an unauthenticated adjacent attacker to impersonate a trusted mesh node and bypass mesh node authentication, which may permit unauthorized changes to device or mesh configuration, affecting confidentiality, integrity and availability.
CVSS v4.0
Score 7.7high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-15469 describes a vulnerability in TP-Link Deco XE75 v3, XE5300 v3.6, and WE10800 v3.6 mesh devices where a hard-coded RSA-512 private key is embedded in the firmware. This key is used by the mesh protocol for authenticating nodes. An attacker who obtains the firmware image and has local network access can use this shared private key to impersonate a trusted mesh node, bypassing authentication mechanisms. This flaw allows unauthorized changes to device or mesh configurations, affecting the security properties of confidentiality, integrity, and availability.
Potential Impact
Successful exploitation enables an unauthenticated adjacent attacker to impersonate a trusted mesh node, bypassing mesh node authentication. This can lead to unauthorized modifications of device or mesh configurations, compromising confidentiality, integrity, and availability of the affected network mesh.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time. Until a patch is available, restrict local network access to trusted users and monitor for unauthorized mesh node activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-07-10T22:04:23.852Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8c76e0acd9273b49d9f011
Added to database: 08/24/2026, 16:52:48 UTC
Last enriched: 08/24/2026, 17:07:20 UTC
Last updated: 08/24/2026, 17:37:54 UTC
Views: 5
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