CVE-2026-5039
HIGH8.8CVSS v3
—CVSS v2
0.02%
EPSS (exploit probability)
CWE-1394CWE
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 v3 vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected routers (1)
| Vendor | Model | Matched via | Affected versions | Fixed in | Patch Status |
|---|---|---|---|---|---|
| TP-Link | TP-Link TL-WR841N | — |
versionEndExcluding=231120 | 231120 | Patched |