Answer in brief
CVE-2026-18330 records a Medium severity (CVSS 6.1) vulnerability in Hardcoded Shared RSA-1024 Private Key in Web Login in TP-Link RE305 and Archer C7. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc./Archer AX55 v4 (generic), TP-Link Systems Inc./Archer C7 v5 (generic), TP-Link Systems Inc./RE305 v3 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps TP-Link Systems Inc./Archer AX55 v4 (generic), TP-Link Systems Inc./Archer C7 v5 (generic), TP-Link Systems Inc./RE305 v3 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| TP-Link Systems Inc./Archer AX55 v4generic | >=0 <1.2.1 Build 20260527 | 1.2.1 Build 20260527, 1.2.1 |
| TP-Link Systems Inc./Archer C7 v5generic | >=0 <1.3.1 Build 20260821 Rel. 41256 | 1.3.1 Build 20260821 Rel. 41256, 1.3.1 |
| TP-Link Systems Inc./RE305 v3generic | >=0 <1.1.8 Build 20260921 Rel. 42853 | 1.1.8 Build 20260921 Rel. 42853, 1.1.8 |
Published upstream
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 3, 2026
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.
Quoted source text, attributed separately from HOL analysis.