What is CVE-2026-5039?

CVE-2026-5039 is a high-severity vulnerability in Tp-link Tl-wr841n, classified under CWE-1394. CVSS score: 8.8/10. Published 2026-04-23.

How severe is CVE-2026-5039?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Tp-link Tl-wr841n

CVE-2026-5039

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…

EPSS: 0.000 (3.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tp-link Tl-wr841n — versions 13.0
Tp-link Tl-wr841n_firmware
Tp-link Systems Inc. Tl-wl841n V13 — versions 0

Weakness classification (CWE)

CWE-1394

References

f23511db-6c3e-4e32-a477-6aa17d310630 (Product, patch)

Frequently asked questions

What is CVE-2026-5039?: CVE-2026-5039 is a high-severity vulnerability in Tp-link Tl-wr841n, classified under CWE-1394. CVSS score: 8.8/10. Published 2026-04-23.
How severe is CVE-2026-5039?: High severity. CVSS v3 base score is 8.8 out of 10.