CVE-2026-15469highCWE-321

CVE-2026-15469: high-severity vulnerability in TP-Link Systems Inc. Deco XE75 v3 / XE5300…

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

Published

41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 7.7epss 0.4%
from disclosure to weapon1 days
Published on NVDAug 24
1st PoC+1d
exploitation probability
0.4%top 69% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
Affected products
TP-Link Systems Inc. · Deco XE75 v3 / XE5300 v3.6/ WE10800 v3.6
public PoCs found — 1
githubgithub.com/tony102741/CVE-2026-15469★ 2
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://www.tp-link.com/en/support/download/deco-xe75/v3.60/#Firmwarehttps://www.tp-link.com/us/support/download/deco-we10800/#Firmwarehttps://www.tp-link.com/us/support/download/deco-xe5300/#Firmwarehttps://www.tp-link.com/us/support/download/deco-xe75/v3.60/#Firmwarehttps://www.tp-link.com/us/support/faq/5263/