VulnerabilityAnalyzed

CVE-2026-15141

Successful exploitation may allow an adjacent attacker with access to the web management interface to obtain device configuration details and other sensitive information.

MEDIUM 5.3EPSS 0.12%

Does this matter?

Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 5.3 MEDIUMCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.12% probability · 2th percentile
CISA KEV: Not listed
Weakness: CWE-346
Affected: tp-link/tl-wr820n firmware
Source: f23511db-6c3e-4e32-a477-6aa17d310630

References

https://www.tp-link.com/en/support/download/tl-wr820n/#FirmwareProduct
https://www.tp-link.com/en/support/faq/5243/Vendor Advisory
https://www.tp-link.com/kr/support/download/tl-wr820n/#FirmwareProduct

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.