CVE-2026-15469 Hard-coded Mesh Group Private Key in TP-Link Deco XE75, XE5300, and WE10800
An attacker with local network access can impersonate a trusted mesh node using a hard-coded key, bypassing authentication to modify device configuration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15469?
CVE-2026-15469 is a high-severity vulnerability in TP-Link Systems Inc. Deco XE75 v3 / XE5300 v3.6/ WE10800 v3.6, published on 24 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-321
Which versions are affected by CVE-2026-15469?
How do I fix CVE-2026-15469?
No fix has been published for CVE-2026-15469 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15469 being exploited?
There is no known exploitation of CVE-2026-15469 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-w7r2-cxjq-9w33.