Upstream information

CVE-2026-18321 at MITRE

Description

Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail CNA (Gitlab)
Base Score 4.7
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1273356 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • libntpc1 >= 1.2.5-1.1
  • ntpsec >= 1.2.5-1.1
  • ntpsec-devel >= 1.2.5-1.1
  • ntpsec-doc >= 1.2.5-1.1
  • ntpsec-utils >= 1.2.5-1.1
  • python3-ntp >= 1.2.5-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-11417

SUSE Timeline for this CVE

CVE page created: Sun Aug 2 11:35:31 2026
CVE page last modified: Fri Aug 21 12:46:08 2026