What’s Vulnerable › Vulnerabilities

CVE-2025-67268

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-02 · updated 2026-07-15
• Weakness: CWE-122

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.

Affected products

• ntpsec gpsd: before 3.27.1 — fixed in 3.27.1

How to fix

Upgrade to a fixed version: ntpsec gpsd 3.27.1. Check the vendor advisory for mitigations.

References

• https://github.com/Jaenact/gspd_cve/blob/main/CVE-2025-67268/README.md
• https://github.com/ntpsec/gpsd/blob/master/drivers/driver_nmea2000.c
• https://github.com/ntpsec/gpsd/commit/dc966aa74c075d0a6535811d98628625cbfbe3f4
• https://access.redhat.com/errata/RHSA-2026:0770
• https://access.redhat.com/errata/RHSA-2026:0771
• https://access.redhat.com/errata/RHSA-2026:1621
• https://access.redhat.com/security/cve/CVE-2025-67268
• https://bugzilla.redhat.com/show_bug.cgi?id=2426835
• https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-67268.json

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