CVE-2025-67268CRITICAL 9.8EPSS p40.8%

CVE-2025-67268CVE-2025-67268

Description

gpsd before commit dc966aa contains a heap-based out-of-bounds write vulnerability in the drivers/driver_nmea2000.c file. The hnd_129540 function, which handles NMEA2000 PGN 129540 (GNSS Satellites in View) packets, fails to validate the user-supplied satellite count against the size of the skyview array (184 elements). This allows an attacker to write beyond the bounds of the array by providing a satellite count up to 255, leading to memory corruption, Denial of Service (DoS), and potentially arbitrary code execution.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.53% probability of exploitation · percentile 40.8% · 2026-06-18T12:00:27Z
Published2026-01-02
Last modified2026-01-12

Underlying weaknesses· 1

CWE-122

References

  1. https://github.com/Jaenact/gspd_cve/blob/main/CVE-2025-67268/README.md
  2. https://github.com/ntpsec/gpsd/blob/master/drivers/driver_nmea2000.c
  3. https://github.com/ntpsec/gpsd/commit/dc966aa74c075d0a6535811d98628625cbfbe3f4

1

TypeTargetConfidenceTier
WeaknessHeap-based Buffer Overflowcwe-1220%live

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