A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.



With a specific request to

webauth_operation.php

that doesn't require authentication, an attacker is able to upload and download arbitrary files via J-Web, leading to a loss of

integrity or confidentiality, which may allow chaining to other vulnerabilities.


This issue affects Juniper Networks Junos OS on SRX Series:



*

21.2 versions prior to 21.2R3-S8;
* 21.4

versions prior to

21.4R3-S6;
* 22.1

versions prior to

22.1R3-S5;
* 22.2

versions prior to

22.2R3-S3;
* 22.3

versions prior to

22.3R3-S2;
* 22.4 versions prior to 22,4R2-S2, 22.4R3;
* 23.2 versions prior to

23.2R1-S2, 23.2R2.


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Advisories

No advisories yet.

Fixes

Solution

The following software releases have been updated to resolve this specific issue: 21.2R3-S8*, 21.4R3-S6*, 22.1R3-S5*, 22.2R3-S3*, 22.3R3-S2*, 22.4R2-S2, 22.4R3*, 23.2R1-S2, 23.2R2*, 23.4R1, and all subsequent releases. *Pending Publication


Workaround

Disable J-Web, or limit access to only trusted hosts.

History

Tue, 21 Oct 2025 23:15:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000


Mon, 03 Feb 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2023-11-13'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2025-10-21T23:05:36.801Z

Reserved: 2023-06-27T16:17:25.277Z

Link: CVE-2023-36851

cve-icon Vulnrichment

Updated: 2024-08-02T17:01:09.845Z

cve-icon NVD

Status : Analyzed

Published: 2023-09-27T15:18:54.877

Modified: 2025-10-24T16:42:06.123

Link: CVE-2023-36851

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses