CVE-2026-18330

What it is

A hard-coded cryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5. The same RSA-1024 private key is stored within firmware configuration files and reused across devices. An attacker who obtains the private key and captures an HTTP Web UI login session may use the key to decrypt the administrator password.  Successful exploitation may disclose the administrator password captured from an HTTP login session and compromise session confidentiality.

At a glance

Exploitability

Can be exploited from the same network segment without logging in. High risk of data exposure.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-09-03 23:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-27 18:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.3% in the next 30 days (EPSS).
• Severity: 6.1 MEDIUM (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2026-09-03 23:17 UTC

Last modified

2026-10-27 18:17 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-321

Record status

Deferred

Attack profile CVSS 4.0 · 6.1

Attack vector

Adjacent network

Complexity

Low

Attack requirements

Present

Privileges needed

None

User interaction

None

Confidentiality

High

Integrity

Low

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-18330.md and follow it. Check whether this project is affected by CVE-2026-18330. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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