CVE-2026-18321

4.7 mediumEPSS 0.1%

Medium (4.7). EPSS 0.1% chance of exploitation in the next 30 days.

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

Severity

4.7 medium

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2026-07-31
Modified: 2026-08-28
Record from: the NVD, synced 2026-10-19