Out-of-bounds Read in Tp-link Tl-wr841n
CVE-2026-3622
The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service. Successful exploitation can cause the UPnP service to cras…
Vulnerability class: Buffer Overflow
EPSS: 0.004 (27.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Tp-link Tl-wr841n — versions 14
- Tp-link Tl-wr841n_firmware
- Tp-link Systems Inc. Tl-wr841n V14 — versions 0
Weakness classification (CWE)
References
- f23511db-6c3e-4e32-a477-6aa17d310630 (Product, patch)
- f23511db-6c3e-4e32-a477-6aa17d310630 (Product, patch)
- f23511db-6c3e-4e32-a477-6aa17d310630 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-3622?
- CVE-2026-3622 is a high-severity vulnerability in Tp-link Tl-wr841n, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-03-26.
- How severe is CVE-2026-3622?
- High severity. CVSS v3 base score is 7.5 out of 10.