ID
VAR-202604-2484
CVE
CVE-2026-5039
TITLE
TP-LINK Technologies of TL-WR841N Vulnerability in firmware regarding the use of default encryption keys
Trust: 0.8
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. This can result in loss of integrity and cause a denial-of-service condition.All information handled by the software may be leaked to the outside. All information handled by the software may be rewritten. Furthermore, the software may stop working completely. Furthermore, attacks that exploit this vulnerability will not affect other software
Trust: 1.62
AFFECTED PRODUCTS
| vendor: | tp link | model: | tl-wr841n | scope: | lt | version: | 231120 | Trust: 1.0 |
| vendor: | tp link | model: | tl-wr841n | scope: | eq | version: | - | Trust: 0.8 |
| vendor: | tp link | model: | tl-wr841n | scope: | eq | version: | tl-wr841n firmware 231120 | Trust: 0.8 |
CVSS
SEVERITY | CVSSV2 | CVSSV3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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PROBLEMTYPE DATA
| problemtype: | CWE-1394 | Trust: 1.0 |
| problemtype: | Using the default encryption key (CWE-1394) [ others ] | Trust: 0.8 |
EXTERNAL IDS
| db: | NVD | id: | CVE-2026-5039 | Trust: 2.6 |
| db: | JVNDB | id: | JVNDB-2026-013941 | Trust: 0.8 |
REFERENCES
| url: | https://www.tp-link.com/us/support/download/tl-wr841n/v13/#firmware | Trust: 1.8 |
| url: | https://nvd.nist.gov/vuln/detail/cve-2026-5039 | Trust: 0.8 |
SOURCES
| db: | JVNDB | id: | JVNDB-2026-013941 |
| db: | NVD | id: | CVE-2026-5039 |
LAST UPDATE DATE
2026-06-19T23:29:12.164000+00:00
SOURCES UPDATE DATE
| db: | JVNDB | id: | JVNDB-2026-013941 | date: | 2026-05-07T01:51:00 |
| db: | NVD | id: | CVE-2026-5039 | date: | 2026-05-05T14:11:58.700 |
SOURCES RELEASE DATE
| db: | JVNDB | id: | JVNDB-2026-013941 | date: | 2026-05-07T00:00:00 |
| db: | NVD | id: | CVE-2026-5039 | date: | 2026-04-23T18:16:30.377 |