CVE-2025-59980

MediumCVSS 6.5/10Last modified Oct 8, 2026

Description

An Authentication Bypass by Primary Weakness

in the FTP server of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to get limited read-write access to files on the device. When the FTP server is enabled and a user named "ftp" or "anonymous" is configured, that user can login without providing the configured password and then has read-write access to their home directory.

This issue affects Junos OS: 

* all versions before 22.4R3-S8, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-305

Affected software

VendorProductVersions
Juniper NetworksJunos OS< 22.4R3-S8; >= 23.2, < 23.2R2-S3; >= 23.4, < 23.4R2

References

Timeline

Published
Oct 9, 2025
Last modified
Oct 8, 2026
NVD status
Analyzed

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CVE-2025-59980: Medium severity, CVSS 6.5 | Vulnix