Vulnerability in Juniper Junos
CVE-2025-59980
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Juniper Junos — versions 22.4, 23.2, 23.4
- Juniper Networks Junos OS — versions 0, 23.2, 23.4
Weakness classification (CWE)
References
- supportportal.juniper.net/JSA103167 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-59980?
- CVE-2025-59980 is a medium-severity vulnerability in Juniper Junos, classified under Authentication Bypass by Primary Weakness. CVSS score: 6.5/10. Published 2025-10-09.
- How severe is CVE-2025-59980?
- Medium severity. CVSS v3 base score is 6.5 out of 10.