CVE-2025-66406: certificates < 0.29.0

CVE-2025-66406. CVSS 3.1 base score 5.0 (MEDIUM, Vendor/CNA). EPSS 0.00151 (percentile 0.03885), scored 17-Oct-2026.

Affected technology

certificates · < 0.29.0
smallstep

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · High privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 5.0/10) rates confidentiality impact as none; integrity impact as low; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 18-Oct-2026 17:26 UTC

CWE: CWE-863
CCR priority: 20.0 /100 (P4)
CVSS 3.1: 5.0 /10 · CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H · Vendor/CNA
EPSS: 0.00151 · percentile 0.03885 · 2026-10-17
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-18 17:25:50.801280+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-66406.html