CVE-2025-67268
CRITICALgpsd < 3.27.1 - Heap-based Buffer Overflow in NMEA2000 PGN 129540 Packet Handling
Title source: llmDescription
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.
References (3)
Core 3
Core References
Exploit, Third Party Advisory
https://github.com/Jaenact/gspd_cve/blob/main/CVE-2025-67268/README.md
Scores
CVSS v3
9.8
EPSS
0.0053
EPSS Percentile
40.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-122
Status
published
Products (1)
gpsd_project/gpsd
< 3.27.1
Published
Jan 02, 2026
Tracked Since
Feb 18, 2026