CVE-2026-38821

HighCVSS 7.1/10Last modified Sep 9, 2026

Description

A heap-based buffer overflow vulnerability exists in openNDS before 11.0.0 that allows an unauthenticated attacker on the captive portal network to crash the openNDS daemon (denial of service) and potentially achieve remote code execution. This is in http_microhttpd.c.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Weakness enumeration

CWE-122

Affected software

No affected versions have been published.

Timeline

Published: Aug 28, 2026
Last modified: Sep 9, 2026
NVD status: Deferred

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