CVE-2026-38821
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-122 |
| Vendor | opennds |
| Product | opennds |
| Published | Aug 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
openNDS / openNDS
0 < 11.0.0