CVE-2026-15141

Medium

Description

The web interface of the affected device relies on the HTTP referrer header as part of request validation. Requests containing empty Referer value, or omitting the Referer header entirely, may be accepted and processed due to insufficient validation logic. Successful exploitation may allow an adjacent attacker with access to the web management interface to obtain device configuration details and other sensitive information.

SeverityMedium

CVSS5.7

Exploit probability—

Product

Tp-link Tl-wr820n Firmware

PublishedAug 12, 2026

First seenAug 12, 2026

Weakness typeCWE-346CWE-346

How to fix

Update

tp-link tl-wr820n_firmware1.15.20 or later

Patches

Vendor advisories

tp-link.com/en/support/faq/5243/

Affected products

Product	Affected versions	Fixed in
tp-link tl-wr820n_firmware	v < 1.15.20	1.15.20

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