MEDIUMCVSS v3.1 5.3Actively exploited · CISA KEV since 2023-11-13Vulnerability
CVE-2023-36847
Juniper Junos OS on EX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to installAppPackage.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities.
Properties
- Euvd product
- Junos OS
- Vulnerability name
- Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability
- First seen
- 2025-10-21T23:05:40+00:00
- Cvss score
- 5.3
- Epss score
- 0.83455
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2023-11-17
- Euvd assigner
- juniper
- Retrieved at
- 2026-10-21T01:24:47+00:00
- Exploited euvd since
- 2023-11-13T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2023-11-13
- Score
- 5.3
- Euvd base score version
- 3.1
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- Juniper Networks
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 5.3
Related Entities (157 · showing 23)
AFFECTS_PRODUCT (154 · showing 20)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
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