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VulnerabilityPublished Updated

CVE-2025-59978: Juniper Networks Junos Space · XSS or 'Cross-site Scripting'

Affects Juniper Networks Junos SpaceSource CVE Database V5

0

Not known to be exploited · CVSS 9.0 Critical.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
9.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Juniper Networks Junos SpaceAffected
  • =0
Fixed in–

AI-suggested

Organizations should prioritize upgrading Junos Space to version 24.1R4 or later as soon as the patch becomes available. Until then, implement strict input validation and sanitization controls on all user inputs within the management interface to prevent injection of malicious scripts. Restrict access to the Junos Space web interface to trusted administrators and networks, employing network segmentation and strong authentication mechanisms such as multi-factor authentication. Monitor logs and user activity for unusual behavior indicative of attempted exploitation. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts in browsers accessing Junos Space. Conduct regular security assessments and penetration testing focused on web interface vulnerabilities. Additionally, educate administrators about the risks of clicking on untrusted links or content within the management interface to reduce the likelihood of successful social engineering attacks.

Description

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Juniper Networks Junos Space allows an attacker to store script tags directly in web pages that, when viewed by another user, enable the attacker to execute commands with the target's administrative permissions. This issue affects all versions of Junos Space before 24.1R4.

References

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