HIGH

CVE-2026-84409

CVSS v3

7.5

HIGH

EPSS Score

0.4 %

exploit probability, as of 2026-09-30

CISA KEV

known exploited

Exploitation

—

SSVC status

Description

The device's update mechanism retrieves metadata for software updates over an unencrypted HTTP connection and stores portions of that metadata for later use. A management interface subsequently returns this stored value in a JSON response, and the web interface responsible for displaying update information inserts that value directly into the page as HTML. This behavior allows attacker‑controlled metadata to be interpreted as script content. In addition, the same authenticated origin provides an

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2026-09-29
Last Modified: 2026-09-29

Frequently asked questions

What is CVE-2026-84409?

Is CVE-2026-84409 actively exploited?

Active exploitation of CVE-2026-84409 has not been confirmed. Its EPSS score was 0.4% on 2026-09-30, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-84409?

CVE-2026-84409 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

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