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CVE-2026-102485— Out-of-bounds Read in ntpsec

Quick assessment

Affected
NTPsec ntpsec
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 NTPsec 的 ntpd 版本 1.2.6 之前，Motorola Oncore 参考时钟驱动程序中存在越界读取漏洞。若攻击者能够控制 GPS 接收器的串行数据，则可通过 PPS 控制（@@Gc）回复中携带一个超出范围的模式字节，导致 ntpd 进程崩溃或泄露内存信息。

CVSS 5.2 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
NTPsec ntpsec < 1.2.6 affected
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I. Basic Information for CVE-2026-102485

Vulnerability Information
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Vulnerability Title
Out-of-bounds Read in ntpsec
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
NTPsec ntpsec 0 ~ 1.2.6 -

II. Public POCs for CVE-2026-102485

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III. Intelligence Information for CVE-2026-102485

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Other References for CVE-2026-102485 (2)

Same Patch Batch · NTPsec · 2026-10-21 · 4 CVEs total

CVE-2026-102486 7.5 HIGH Out-of-bounds Read in ntpsec
CVE-2026-102483 7.5 HIGH Reachable Assertion in ntpsec
CVE-2026-102484 6.4 MEDIUM Heap-based Buffer Overflow in ntpsec

IV. Related Vulnerabilities

Same product: ntpsec
Same vendor: NTPsec
Same weakness: CWE-125

V. Comments for CVE-2026-102485

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