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CVE-2026-15469— Hard-coded Mesh Group Private Key in TP-Link Deco XE75, XE5300, and WE10800

Quick assessment

Affected
TP-Link Systems Inc. Deco XE75 v3 / XE5300 v3.6/ WE10800 v3.6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TP-Link deco是中国TP-Link公司的一款网状WiFi系统。 TP-Link deco存在加密问题漏洞，该漏洞源于mesh功能使用硬编码的RSA-512 mesh组私钥进行节点认证，可能导致未经认证的相邻攻击者冒充受信任的mesh节点并绕过节点认证，进而未经授权修改设备或mesh配置。

CVSS 7.7 · High EPSS 0.41% · P35

Affected Version Matrix 1

VendorProduct Version RangeStatus
TP-Link Systems Inc. Deco XE75 v3 / XE5300 v3.6/ WE10800 v3.6 < 1.5.0 Build 20260603 affected
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I. Basic Information for CVE-2026-15469

Vulnerability Information
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Vulnerability Title
Hard-coded Mesh Group Private Key in TP-Link Deco XE75, XE5300, and WE10800
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5
Vulnerability Title
TP-Link deco 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-Link deco是中国TP-Link公司的一款网状WiFi系统。 TP-Link deco存在加密问题漏洞，该漏洞源于mesh功能使用硬编码的RSA-512 mesh组私钥进行节点认证，可能导致未经认证的相邻攻击者冒充受信任的mesh节点并绕过节点认证，进而未经授权修改设备或mesh配置。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
TP-Link Systems Inc. Deco XE75 v3 / XE5300 v3.6/ WE10800 v3.6 0 ~ 1.5.0 Build 20260603 -

II. Public POCs for CVE-2026-15469

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III. Intelligence Information for CVE-2026-15469

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Vendor Advisories for CVE-2026-15469 (1)

Vendor Pages for CVE-2026-15469 (1)

Same Patch Batch · TP-Link Systems Inc. · 2026-08-24 · 4 CVEs total

CVE-2026-9254 8.7 HIGH Command Injection Vulnerability in Parent Control of Multiple TP-Link Archer Devices
CVE-2026-16348 8.5 HIGH Command Injection Vulnerability in VPN connection of Archer BE800
CVE-2026-78541 8.5 HIGH Command Injection in Parent Control of TP-Link Archer BE3600 v1

IV. Related Vulnerabilities

Same vendor: TP-Link Systems Inc.
Same weakness: CWE-321