CVE catalog

CVE-2026-38821

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 pot

[CVE catalog]

Severity: High · CVSS 7.1CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Published: Aug 28, 2026, 2:16:21 AM UTC
Updated: Aug 28, 2026, 2:16:21 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.31% · Oct 25, 2026

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	opennds	sid	`10.3.1+dfsg-1`	vulnerable
Debian	opennds	trixie	`10.3.1+dfsg-1`	vulnerable
Debian	opennds	bookworm	`9.10.0-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	opennds	source	sid	`(unfixed)`	not yet assigned	Not reported	[1146716]
Debian	opennds	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1146716]
Debian	opennds	source	bookworm	`(unfixed)`	end-of-life	Not reported	[1146716]

[Debian bug #1146716]

Notes

[trixie] opennds: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[opennds]Affected
Details (2)
- 9.10.0-1 · all · bookworm
  Affected
  nvd · opennds · debian · bookworm; nvd · opennds · debian · 12
- 9.10.0-1 · all · bookworm
  Affected
  nvd · opennds · debian · bookworm; nvd · opennds · debian · 12
[opennds-daemon]Affected
Source package: [opennds]
Details (2)
- 9.10.0-1 · amd64 · bookworm
  Affected
  nvd · opennds · debian · bookworm; nvd · opennds · debian · 12
- 9.10.0-1 · arm64 · bookworm
  Affected
  nvd · opennds · debian · bookworm; nvd · opennds · debian · 12
[opennds-daemon-common]Affected
Source package: [opennds]
Details (2)
- 9.10.0-1 · all · bookworm
  Affected
  nvd · opennds · debian · bookworm; nvd · opennds · debian · 12
- 9.10.0-1 · all · bookworm
  Affected
  nvd · opennds · debian · bookworm; nvd · opennds · debian · 12

[Debian 13 (Trixie)]

[opennds]Affected
Details (2)
- 10.3.1+dfsg-1 · all · trixie
  Affected
  nvd · opennds · debian · 13
- 10.3.1+dfsg-1 · all · trixie
  Affected
  nvd · opennds · debian · 13
[opennds-daemon]Affected
Source package: [opennds]
Details (2)
- 10.3.1+dfsg-1 · amd64 · trixie
  Affected
  nvd · opennds · debian · 13
- 10.3.1+dfsg-1 · arm64 · trixie
  Affected
  nvd · opennds · debian · 13
[opennds-daemon-common]Affected
Source package: [opennds]
Details (2)
- 10.3.1+dfsg-1 · all · trixie
  Affected
  nvd · opennds · debian · 13
- 10.3.1+dfsg-1 · all · trixie
  Affected
  nvd · opennds · debian · 13

Observed: Oct 23, 2026, 9:33:42 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]