Critical severity · published Jan 2, 2026
CVE-2025-67268
gpsd before commit dc966aa contains a heap-based out-of-bounds write vulnerability in the drivers/driver_nmea2000.c file
9.8
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GP
Gpsd · Gpsd Project
before 3.27.1 · source: NVD
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-67268
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-67268
Exploit
https://github.com/Jaenact/gspd_cve/blob/main/CVE-2025-67268/README.md
Product
https://github.com/ntpsec/gpsd/blob/master/drivers/driver_nmea2000.c
Patch
https://github.com/ntpsec/gpsd/commit/dc966aa74c075d0a6535811d98628625cbfbe3f4
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:0770
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:0771
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:1621
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