VULNERABILITY INTELLIGENCE

CVE-2026-5039

CVSS score8.8 HIGH
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-04-23
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

TP-Link TL-WR841N v13 uses DES-CBC encryption in the TDDPv2 debug protocol with a cryptographic key derived from default web management credentials, making the key predictable if device is left in default configuration. A network-adjacent attacker can exploit this weakness to gain unauthorized access to the protocol, read debug data, modify certain device configuration values, and trigger device reboot, resulting in loss of integrity and a denial-of-service condition.

Weakness classification

  • f23511db-6c3e-4e32-a477-6aa17d310630: CWE-1394

Primary references