CVE-2026-101956
9.8CriticalPublished 14 Oct 2026 · NVD status: Awaiting Analysis · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- CWE-287
Impact
Unauthenticated remote attackers can execute arbitrary commands with root privileges via the exposed J-Web interface. They only need network access to reach the J-Web web service.
Root cause
Improper authentication handling in the J-Web component allows unauthorized requests to bypass login verification entirely.
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Fix & remediation
Upgrade to the fixed Junos OS release referenced in Juniper advisory JSA112188; immediately mitigate by disabling J-Web or restricting access to trusted management subnets using firewall filters.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
An Improper Authentication vulnerability in the J-Web web management component of Juniper Networks Junos OS allows an unauthenticated remote attacker to execute arbitrary Junos commands with root privileges via the exposed J-Web web interface.