Description
Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd
Published: 2026-07-31
Score: 4.7 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Solution

Upgrade to version 1.2.5

Tracking

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Advisories

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History

Fri, 31 Jul 2026 19:45:00 +0000

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

Fri, 31 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 31 Jul 2026 18:45:00 +0000

Type Values Removed Values Added
Description Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd
Title Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in ntpsec
Weaknesses CWE-120
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Subscriptions

Ntpsec Ntpsec
cve-icon MITRE

Status: PUBLISHED

Assigner: GitLab

Published:

Updated: 2026-07-31T18:54:10.546Z

Reserved: 2026-07-29T19:04:09.259Z

Link: CVE-2026-18321

cve-icon Vulnrichment

Updated: 2026-07-31T18:54:05.907Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T19:30:04Z

Weaknesses
  • CWE-120

    Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')