CVE-2026-5039
MEDIUM EPSS 2.9%
Published Apr 23, 20262mo ago · Modified Jun 17, 20261w ago
6.1 CVSS 4.0
Published Apr 23, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-1394
Affected Products 2
References 1
- tp-link.com https://www.tp-link.com/us/support/download/tl-wr841n/v13/#Firmware
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.