CVE-2026-63586

CriticalCVSS 9.8/10Last modified Sep 3, 2026

Description

The web-based management interface uses a modified uhttpd server with CGI shell scripts. The HTTP Basic Authentication username, taken directly from the Authorization header without sanitization, is inserted into a shell command string executed via the system() function. By submitting a specially crafted username containing shell metacharacters, an unauthenticated attacker with network access to the device can escape the command context and execute arbitrary commands with root privileges.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Aug 25, 2026
Last modified
Sep 3, 2026
NVD status
Deferred

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CVE-2026-63586: Critical severity, CVSS 9.8 | Vulnix