CVE-2026-102486

HIGH 7.5

Out-of-bounds Read in ntpsec

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

Out-of-bounds read in NTS extension field parsing in NTPsec ntpd 1.1.4 through 1.2.5 allows a remote attacker to crash the daemon via an NTS Authenticator and Encrypted Extension Fields (AEEF) field with an oversized nonce length.

CWE	CWE-125
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/891 gitlab.com: https://gitlab.com/NTPsec/ntpsec/-/work_items/895 gitlab.com: https://gitlab.com/NTPsec/ntpsec/-/commit/7cc079387

Credits

afldl; Tristan Madani; Kimi Security Team <[email protected]>