CVE-2026-5363 PUBLISHED

Use of weak cryptographic key in TP-Link Archer C7

Assigner: TPLink
Reserved: 01.04.2026 Published: 15.04.2026 Updated: 16.04.2026

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.

Metrics

CVSS Vector: 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
CVSS Score: 5.4

Product Status

Vendor TP-Link Systems Inc.
Product Archer C7 v5 and v5.8
Versions Default: unaffected
  • affected from 0 to Build 20220715 (incl.)

References

Problem Types

  • CWE-326: Inadequate Encryption Strength CWE

Impacts

  • CAPEC-50 Password Recovery Exploitation