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.
Published: 2026-08-28
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 28 Aug 2026 07:00:00 +0000

Type Values Removed Values Added
Title OpenNDS Buffer Overflow Enables Denial of Service and Remote Code Execution

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'}

Subscriptions

Opennds Opennds
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

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T06:45:04Z

Weaknesses
  • CWE-122

    Heap-based Buffer Overflow