Heap-based Buffer Overflow Affecting opennds package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-OPENNDS-19425069
- published29 Aug 2026
- disclosed28 Aug 2026
Introduced: 28 Aug 2026
NewCVE-2026-38821 (opens in a new tab)How to fix?
There is no fixed version for Debian:unstable opennds.
NVD Description
Note: Versions mentioned in the description apply only to the upstream opennds package and not the opennds package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.