Vulnerability · Published Oct 21, 2026 · Assigned by GitLab
CVE-2026-102483Reachable Assertion in ntpsec
High 7.5
In plain English
A high-severity security flaw in ntpsec from NTPsec. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 62.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ntpsec | no fix listed | DEBIAN-CVE-2026-102483 |
| Debian:13 | ntpsec | no fix listed | DEBIAN-CVE-2026-102483 |
| Debian:14 | ntpsec | no fix listed | DEBIAN-CVE-2026-102483 |
| Ubuntu:22.04:LTS | ntpsec | no fix listed | UBUNTU-CVE-2026-102483 |
| Ubuntu:24.04:LTS | ntpsec | no fix listed | UBUNTU-CVE-2026-102483 |
| Ubuntu:26.04:LTS | ntpsec | no fix listed | UBUNTU-CVE-2026-102483 |
| Ubuntu:26.10 | ntpsec | no fix listed | UBUNTU-CVE-2026-102483 |
Affected products (as reported)
Weakness: CWE-617 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H