4.7mediumMedium
CVE-2026-18321
Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd
What the metrics mean
- It is requires local access to the machine.
- For an attacker who can reach it, exploitation depends on conditions outside the attacker's control.
- To exploit it, an ordinary user account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 4.7 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-120
- Assigned by
- cve@gitlab.com
Dates
- Published
- 2026-07-31
- Last modified
- 2026-08-28
- Sources
- NVD