# 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.

- **Severity:** High 7.7 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Aug 2026
- **Updated:** 24 Aug 2026
- **Also known as:** GHSA-w7r2-cxjq-9w33

## 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 (Use of Hard-coded Cryptographic Key)

## 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:

- CVE-2026-15469 — Hard-coded RSA-512 mesh group private key in TP-Link Deco XE75/XE5300/WE10800 (CWE-321). Advisory, analysis & PoC methodology (EN/KO). (github_poc): https://github.com/tony102741/CVE-2026-15469

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15469 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-15469 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc. Deco XE75 v3 / XE5300  v3.6/ WE10800 v3.6. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-15469/ (Markdown: https://insights.sbomify.com/CVE-2026-15469/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15469
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15469
- OSV: https://osv.dev/vulnerability/CVE-2026-15469

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15469/
Summaries are generated and may contain mistakes; the official description above is the record.