CVE-2026-101954
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 attackers can gain root-level configuration control and take over the device remotely. They only need network access to an exposed J-Web HTTP or HTTPS management interface.
Root cause
Improper authentication within the J-Web management interface and its NETCONF session handling allows verification bypass.
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 Junos OS and Junos OS Evolved to the fixed releases listed in advisory JSA112187. If you cannot patch immediately, disable J-Web or block access to the HTTP/HTTPS web management ports from untrusted networks.
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 management interface and its NETCONF session handling of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network attacker to obtain root-level device configuration access and take over the device via a reachable J-Web HTTP or HTTPS service when web management is enabled.