What’s Vulnerable › Vulnerabilities
CVE-2025-59980: Junos OS: When a user with the name ftp or anonymous is configured unauthenticated filesystem access is allowed
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-10-09 · updated 2026-10-08
- Weakness: CWE-305
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.
Affected products
- Juniper Junos OS: before 22.4; 22.4, 22.4-r1, 22.4-r1-s1, 22.4-r1-s2, 22.4-r2, 22.4-r2-s1 (+20) — fixed in 22.4
How to fix
Upgrade to a fixed version: Juniper Junos OS 22.4. Check the vendor advisory for mitigations.
References
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