What is CVE-2025-59978?

CVE-2025-59978 is a critical-severity vulnerability in Juniper Junos Space, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2025-10-09.

How severe is CVE-2025-59978?

Critical severity. CVSS v3 base score is 9.0 out of 10.

XSS in Juniper Junos Space

CVE-2025-59978

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (45.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

Affected products

Juniper Junos_space — versions 24.1
Juniper Networks Junos Space — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

sirt@juniper.net (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2025-59978?: CVE-2025-59978 is a critical-severity vulnerability in Juniper Junos Space, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2025-10-09.
How severe is CVE-2025-59978?: Critical severity. CVSS v3 base score is 9.0 out of 10.