---
title: "CVE-2026-101954: Juniper Networks Junos OS - Authentication Bypass"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-101954/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-101954)

## 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](https://cwe.mitre.org/data/definitions/287.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-101954](https://nvd.nist.gov/vuln/detail/CVE-2026-101954)
- [https://supportportal.juniper.net/JSA112187](https://supportportal.juniper.net/JSA112187)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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