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TI-2026-78849 Aliases CVE-2026-102485GHSA-wwwp-7879-75pf

Out-of-bounds read in NTPsec ntpd Motorola Oncore driver

Priority LOW 23CWE-125Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

NTPsec ntpd before 1.2.6 contains an out-of-bounds read in the Motorola Oncore refclock driver. An attacker who controls the GPS receiver's serial data can send a PPS Control reply with an out-of-range mode byte, which crashes ntpd or discloses memory (CWE-125).

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00181 7th percentileScored 2026-11-07
Fix Fixed ntpsec (NTPsec): 1.2.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NTPsecntpsecbefore 1.2.61.2.6Patch availableCNA
  • ntpsec VendorNTPsec Affected before 1.2.6 Fixed in 1.2.6 Patch available CNA

Remediation

Upgrade ntpsec to 1.2.6 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA ntpsec (NTPsec) Fixed in 1.2.6

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    ntpsec 1.2.6

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-78850 Out-of-bounds read in NTPsec ntpd NTS extension field parsingPriority MEDIUM 40
    • TI-2026-78847 Reachable assertion in NTPsec lets remote attackers terminate ntpdPriority LOW 39
    • TI-2026-78848 Heap-based buffer overflow in NTPsec JJY refclock driverPriority LOW 28
    Show all 4 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-102485
  2. 2026-10-21 Alias added: GHSA-wwwp-7879-75pf
  3. 2026-10-29 CISA SSVC decision points changed
  4. 2026-11-06 Affected versions changed · Red Hat
  5. 2026-11-06 CVSS score added · Red Hat

References

Other 2

  • TI-2019-04513 An issue was discovered in NTPsec before 1.1.3. CVSS 3.0CRITICAL 9.1
  • TI-2019-04514 An issue was discovered in NTPsec before 1.1.3. CVSS 3.0CRITICAL 9.1
  • TI-2026-42067 gpsd gpsprof Command Injection via gnuplot plot title subtype field CVSS 4.0HIGH 8.4
  • TI-2019-04515 An issue was discovered in NTPsec before 1.1.3. CVSS 3.0MEDIUM 6.5
  • TI-2019-04512 An issue was discovered in NTPsec before 1.1.3. CVSS 3.0MEDIUM 6.5
  • TI-2026-78850 Out-of-bounds read in NTPsec ntpd NTS extension field parsing CVSS 3.1HIGH 7.5
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences