What is CVE-2026-102486?

CVE-2026-102486 is a high-severity vulnerability in Ntpsec, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-10-21.

How severe is CVE-2026-102486?

High severity. CVSS v3 base score is 7.5 out of 10.

Out-of-bounds Read in Ntpsec

CVE-2026-102486

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.

Vulnerability class: Buffer Overflow

Published 2026-10-21.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Ntpsec

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

gitlab.com/NTPsec/ntpsec/-/work_items/891
gitlab.com/NTPsec/ntpsec/-/work_items/895
gitlab.com/NTPsec/ntpsec/-/commit/7cc079387

Frequently asked questions

What is CVE-2026-102486?: CVE-2026-102486 is a high-severity vulnerability in Ntpsec, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-10-21.
How severe is CVE-2026-102486?: High severity. CVSS v3 base score is 7.5 out of 10.