CVE-2026-102483

HIGH 7.5

Reachable Assertion in ntpsec

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

Reachable exit in NTPsec ntpd 1.1.4 through 1.2.5 allows a remote attacker to terminate the daemon via an NTS request with excess NTS Cookie Placeholder extension fields.

CWE	CWE-617
Vendor	ntpsec
Product	ntpsec
Published	Oct 21, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

NTPsec / ntpsec

1.1.4 < 1.2.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.com: https://gitlab.com/NTPsec/ntpsec/-/work_items/899 gitlab.com: https://gitlab.com/NTPsec/ntpsec/-/commit/df83f3c4f

Credits

William Burgess <[email protected]>