CVE-2026-101954 Juniper Networks Junos OS - Authentication Bypass

Juniper Networks Junos OS and Junos OS Evolved contain an improper authentication vulnerability in the J-Web management interface and NETCONF session handling, letting unauthenticated network attackers obtain root-level device configuration access via reachable J-Web HTTP/HTTPS service, exploit requires web management to be enabled.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Update to the latest Junos OS and Junos OS Evolved versions with the fix applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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