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.

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History

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
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.
First Time appeared Opennds
Opennds opennds
Weaknesses CWE-122
CPEs cpe:2.3:a:opennds:opennds:*:*:*:*:*:*:*:*
Vendors & Products Opennds
Opennds opennds
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-08-28T00:10:10.769Z

Reserved: 2026-04-06T10:01:05.608Z

Link: CVE-2026-38821

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-28T02:16:21.490

Modified: 2026-08-28T02:16:21.490

Link: CVE-2026-38821

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses