CVE-2026-18330
A hard-coded cryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5.
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 4.0
- 6.1 MEDIUMCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.26% probability · 17th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-321
- Source
- f23511db-6c3e-4e32-a477-6aa17d310630
EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.tp-link.com/en/support/download/archer-c7/v5/#Firmware
- https://www.tp-link.com/en/support/download/re305/v3/#Firmware
- https://www.tp-link.com/us/support/download/archer-c7/v5/#Firmware
- https://www.tp-link.com/us/support/download/re305/v3/#Firmware
- https://www.tp-link.com/us/support/faq/5362/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.