Out-of-bounds read in the Motorola Oncore refclock driver in NTPsec ntpd before 1.2.6 allows an attacker who controls the GPS receiver's serial data to crash ntpd or disclose memory via a PPS Control (@@Gc) reply with an out-of-range mode byte.

Metrics

No CVSS v4.0

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Ntpsec
  • Ntpsec

No data.

No data.

References
Link Providers
https://gitlab.com/NTPsec/ntpsec/-/commit/22a09b3aec58831a9e4a008f3f22caa155f969c2 cve-icon cve-icon
https://gitlab.com/NTPsec/ntpsec/-/work_items/895 cve-icon cve-icon
History

Wed, 21 Oct 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Ntpsec
Ntpsec ntpsec
Vendors & Products Ntpsec
Ntpsec ntpsec

Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Description Out-of-bounds read in the Motorola Oncore refclock driver in NTPsec ntpd before 1.2.6 allows an attacker who controls the GPS receiver's serial data to crash ntpd or disclose memory via a PPS Control (@@Gc) reply with an out-of-range mode byte.
Title Out-of-bounds Read in ntpsec
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 5.2, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published: 2026-10-21T15:03:51.277Z

Updated: 2026-10-21T15:03:51.277Z

Reserved: 2026-09-29T09:30:13.046Z

Link: CVE-2026-102485

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-21T16:17:14.187

Modified: 2026-10-22T16:18:19.040

Link: CVE-2026-102485

cve-icon Redhat

No data.