CVE-2026-102485 PUBLISHED

Out-of-bounds Read in ntpsec

Assigner: GitLab
Reserved: 29.09.2026 Published: 21.10.2026 Updated: 21.10.2026

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

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS Score: 5.2

Attack Vector	Physical	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	NTPsec
Product	ntpsec
Versions	Default: unknown affected from 0 to 1.2.6 (excl.)

Solutions

Upgrade to version 1.2.6

Credits

Tristan Madani finder

References

https://gitlab.com/NTPsec/ntpsec/-/work_items/895
https://gitlab.com/NTPsec/ntpsec/-/commit/22a09b3aec58831a9e4a008f3f22caa155f969c2

Problem Types

CWE-125: Out-of-bounds Read CWE