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RedhatCVE
RedhatCVE
•added 2026/08/12 2:51 a.m.•15 views

CVE-2026-18321

A flaw was found in NTPsec. A local attacker could exploit a buffer overflow vulnerability in the Zyfer refclock component, leading to the ntpd daemon crashing. This could result in a denial of service DoS, making the network time synchronization service unavailable...

4.7CVSS5.5AI score0.00111EPSS
SaveExploits0References4
SUSE CVE
SUSE CVE
•added 2026/08/02 4:38 p.m.•24 views

SUSE CVE-2026-18321

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

4.7CVSS5.5AI score0.00111EPSS
SaveExploits0References3
UbuntuCve
UbuntuCve
•added 2026/07/31 7:17 p.m.•11 views

CVE-2026-18321

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

4.7CVSS5.3AI score0.00111EPSS
SaveExploits0References2
OSV
OSV
•added 2026/07/31 7:17 p.m.•18 views

UBUNTU-CVE-2026-18321

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

4.7CVSS5.5AI score0.00111EPSS
SaveExploits0References3
Debian CVE
Debian CVE
•added 2026/07/31 6:04 p.m.•21 views

CVE-2026-18321

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

4.7CVSS5.5AI score0.00111EPSS
SaveExploits0
AlpineLinux
AlpineLinux
•added 2026/07/31 6:04 p.m.•17 views

CVE-2026-18321

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

4.7CVSS5.5AI score0.00111EPSS
SaveExploits0
Vulnrichment
Vulnrichment
•added 2026/07/31 6:04 p.m.•16 views

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...

4.7CVSS5.5AI score0.00111EPSS
SaveExploits0References1
Cvelist
Cvelist
•added 2026/07/31 6:04 p.m.•48 views

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...

4.7CVSS0.00111EPSS
SaveExploits0References1
attackerkb
attackerkb
•added 2026/07/31 6:04 p.m.•16 views

CVE-2026-18321

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

4.7CVSS5.5AI score0.00111EPSS
SaveExploits0References2
CVE
CVE
•added 2026/07/31 6:04 p.m.•71 views

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...

4.7CVSS5.5AI score0.00111EPSS
SaveExploits0References1
Rapid7 Vulnerability Database (full)
Rapid7 Vulnerability Database (full)
•added 2026/07/31 12:00 a.m.•3 views

CVE-2026-18321: Buffer Copy without Checking Size of Input

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

4.7CVSS5.8AI score0.00111EPSS
SaveExploits0References2
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