Heap-based Buffer Overflow Affecting ntpsec/gpsd package, versions [3.6,3.27.1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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 applicationsSnyk Learn
Learn about Heap-based Buffer Overflow vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-UNMANAGED-NTPSECGPSD-14860879
- published5 Jan 2026
- disclosed2 Jan 2026
- creditJaenact
Introduced: 2 Jan 2026
CVE-2025-67268 (opens in a new tab)How to fix?
Upgrade ntpsec/gpsd to version 3.27.1 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow via the hnd_129540 function. An attacker can cause memory corruption, application crash, or potentially execute arbitrary code by sending specially crafted NMEA2000 PGN 129540 packets with a manipulated satellite count value exceeding the bounds of the skyview array.