CVE-2025-59980

09.10.2025, 17:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	6.5 MEDIUM	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
juniper	CNA	6.5 MEDIUM	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA-ADP	ADP	---				---

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Common Weakness Enumeration

CWE-305 - Authentication Bypass by Primary Weakness
The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

Vulnerability Media Exposure

[GERMAN] Juniper JUNOS OS, Space, OS Evolved: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um sich erweiterte Berechtigungen zu verschaffen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen, vertrauliche Informationen offenzulegen oder Daten zu manipulieren.
Published: 2025-10-08T22:00:00+00:00

References

https://supportportal.juniper.net/JSA103167