Fedora 43 : ntpsec (2026-11d8a5a213)

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-11d8a5a213 advisory. Update to the latest upstream release, which has a security fix for CVE-2026-18321, and other bug fixes and improvements. Tenable has extracted the preceding...

libntpc1-1.2.5-1.1 on GA media (moderate)

libntpc1-1.2.5-1.1 on GA media Announcement ID: openSUSE-SU-2026:11417-1 Rating: moderate Cross-References: CVE-2026-18321 Affected Products: openSUSE Tumbleweed An update that solves one vulnerability can now be installed. Description: These are all security issues fixed in the libntpc1-1.2.5-1....

CVE-2026-18321 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in ntpsec

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

CVE-2026-18321 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in ntpsec

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

CVE-2026-18321

CVE-2026-18321 describes a buffer overflow in NTPsec’s Zyfer refclock that can crash ntpd via a local attack. The CVE is listed as a classic buffer overflow (Buffer Copy without Checking Size of Input) affecting ntpsec, but the provided documents do not specify affected versions, exact vulnerable...