DEBIAN-CVE-2026-38821

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Source
https://security-tracker.debian.org/tracker/CVE-2026-38821
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-38821.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-38821
Upstream
Published
2026-08-28T02:16:21Z
Modified
2026-09-10T08:47:23Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / opennds

Package

Name
opennds
Purl
pkg:deb/debian/opennds?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

9.*
9.10.0-1
10.*
10.2.0+dfsg-1
10.3.0+dfsg-0.1
10.3.1+dfsg-1

Ecosystem specific 

{
    "urgency": "end-of-life"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-38821.json"

Debian:13 / opennds

Package

Name
opennds
Purl
pkg:deb/debian/opennds?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

10.*
10.3.1+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-38821.json"

Debian:14 / opennds

Package

Name
opennds
Purl
pkg:deb/debian/opennds?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

10.*
10.3.1+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-38821.json"