EUVD-2026-23137
CVSS VectorNVD
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
1DescriptionNVD
Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation. The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login. An adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration. This issue affects Archer C7: through Build 20220715.
AnalysisAI
TP-Link Archer C7 v5 and v5.8 routers use weak RSA-1024 encryption for admin password transmission during web login, allowing adjacent attackers with network traffic interception capability to perform cryptanalytic attacks (brute-force or key factorization) to recover plaintext credentials and gain unauthorized administrative access. EPSS score of P (Probable) and active POC availability indicate realistic exploitation risk in local network environments; however, exploitation requires both network adjacency and successful cryptanalysis of a 1024-bit RSA key, limiting attack scope to motivated adversaries on shared networks (e.g., compromised WiFi).
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External POC / Exploit Code
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