P4Verified

CVE-2026-101956: Junos OS 25.2 to before 25.2R2-S2, 25.4 to before 25.4R1-S3, 26.2 to before 26.2R1-S2

CVE-2026-101956. CVSS 3.1 base score 9.8 (CRITICAL, Vendor/CNA).

Affected technology

Junos OS · 25.2 to before 25.2R2-S2, 25.4 to before 25.4R1-S3, 26.2 to before 26.2R1-S2
Juniper Networks

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An unauthenticated remote attacker can execute arbitrary Junos commands with root privileges via the exposed J-Web web interface. Vendor/CNA’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality, integrity and availability impact as high.

Published 15-Oct-2026 01:10 UTC

CWE: CWE-287
CCR priority: 39.2 /100 (P4)
CVSS 3.1: 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Vendor/CNA
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-15 01:13:25.227066+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-15 01:07:31.726917+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-101956.html