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Description

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.

PUBLISHED Reserved 2026-04-01 | Published 2026-04-15 | Updated 2026-04-16 | Assigner TPLink




MEDIUM: 5.4CVSS: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

Problem types

CWE-326: Inadequate Encryption Strength

Product status

Default status
unaffected

Any version
affected

Credits

Sérgio Silva (CYBERS3C) finder

References

www.tp-link.com/us/support/faq/3562/

cve.org (CVE-2026-5363)

nvd.nist.gov (CVE-2026-5363)

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