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CVE-2025-59978

30
FAUCET Score

CVE-2025-59978 is a critical Cross-site Scripting (XSS) vulnerability in Juniper Networks Junos Space, affecting all versions prior to 24.1R4. An authenticated attacker can inject malicious script tags into web pages, which, when viewed by another user, allows for arbitrary command execution with the victim's administrative privileges. This vulnerability carries a CVSS score of 9.0 (Critical) due to its network attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating heightened awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 24.1CPE matchmatch criteria
cpe:2.3:a:juniper:junos_space:*:*:*:*:*:*:*:*
24.1CPE matchmatch criteria
cpe:2.3:a:juniper:junos_space:24.1:r1:*:*:*:*:*:*
24.1CPE matchmatch criteria
cpe:2.3:a:juniper:junos_space:24.1:r2:*:*:*:*:*:*
24.1CPE matchmatch criteria
cpe:2.3:a:juniper:junos_space:24.1:r3:*:*:*:*:*:*
>= 0, < 24.1R4CPE match
cpe:2.3:a:juniper:junos_space:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.4CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:M/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 44th percentile among its peer group of 265 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.6 Bluesky, 0.3 Mastodon, and 1.6 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

supportportal.juniper.net / JSA103140
Vendor Advisory