CVE-2025-59986: Juniper Networks Junos Space · XSS or 'Cross-site Scripting'
Affects Juniper Networks Junos SpaceSource CVE Database V5
Not known to be exploited · CVSS 6.1 Medium.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Juniper Networks Junos Space | Affected
| Fixed in– |
AI-suggested
- Apply the official Juniper Networks patch by upgrading to Junos Space version 24.1R4 or later as soon as it becomes available.
- Implement strict input validation and sanitization on all user-supplied data fields within Junos Space, especially Model Devices input areas, to prevent script injection.
- Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts within the Junos Space web interface.
- Limit administrative access to Junos Space interfaces using network segmentation, VPNs, and multi-factor authentication to reduce exposure to potential attackers.
- Educate administrators and users about the risks of clicking on untrusted links or visiting suspicious pages within the management console.
- Monitor Junos Space logs and network traffic for unusual activity that could indicate attempted exploitation.
- Consider deploying web application firewalls (WAFs) with rules designed to detect and block XSS payloads targeting Junos Space.
- Regularly review and audit user permissions to ensure the principle of least privilege is enforced.
Description
An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Juniper Networks Junos Space allows an attacker to inject script tags in the input fields in Model Devices that, when visited by another user, enables the attacker to execute commands with the target's permissions, including an administrator.This issue affects all versions of Junos Space before 24.1R4.