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Description

A Null Pointer Dereference vulnerability exists in the referer header check of the web portal of TP-Link TL-WR841N v14, caused by improper input validation. A remote, unauthenticated attacker can exploit this flaw and cause Denial of Service on the web portal service.This issue affects TL-WR841N v14: before 250908.

PUBLISHED Reserved 2025-08-13 | Published 2026-01-15 | Updated 2026-01-15 | Assigner TPLink




MEDIUM: 6.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-20 Improper Input Validation

Product status

Default status
unaffected

Any version before 250908
affected

Credits

Justus W. Perlwitz, JWP Consulting finder

References

www.tp-link.com/us/support/faq/4894/ vendor-advisory

www.tp-link.com/jp/support/download/tl-wr841n/ patch

www.tp-link.com/en/support/download/tl-wr841n/ patch

www.tp-link.com/us/support/download/tl-wr841n/ patch

cve.org (CVE-2025-9014)

nvd.nist.gov (CVE-2025-9014)

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