Vulnerability Intelligence Report
Hardcoded Shared RSA-1024 Private Key in Web Login in TP-Link RE305 and Archer C7
CVE-2026-18330
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.
No Active Exploit Signals
CVSS Base Score
6.1
MEDIUM
EPSS Probability:0.26%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-321 ↗CWE-321 Use of hard-coded cryptographic key
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| TP-Link Systems Inc. | RE305 v3 | 0 < 1.1.8 Build 20260921 Rel. 42853 (affected) |
| TP-Link Systems Inc. | Archer C7 v5 | 0 < 1.3.1 Build 20260821 Rel. 41256 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.258%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | TP-Link Systems Inc. · Vendor · USA |
| Reserved | 2026-07-29T20:03:53 |
| Published | 2026-09-03T22:24:45 |
| Last Updated | 2026-10-27T17:39:53 |
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