What’s Vulnerable › Vulnerabilities

CVE-2025-52983: Junos OS: After removing ssh public key authentication root can still log in

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-11 · updated 2026-06-17
• Weakness: CWE-446

Description

A UI Discrepancy for Security Feature vulnerability in the UI of Juniper Networks Junos OS on VM Host systems allows a network-based, unauthenticated attacker to access the device. On VM Host Routing Engines (RE), even if the configured public key for root has been removed, remote users which are in possession of the corresponding private key can still log in as root. This issue affects Junos OS: * all versions before 22.2R3-S7, * 22.4 versions before 22.4R3-S5, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S3, * 24.2 versions before 24.2R1-S2, 24.2R2.

Affected products

• Juniper Junos OS: before 22.2; 22.2, 22.2-r1, 22.2-r1-s1, 22.2-r1-s2, 22.2-r2, 22.2-r2-s1 (+38) — fixed in 22.2

How to fix

Upgrade to a fixed version: Juniper Junos OS 22.2. Check the vendor advisory for mitigations.

References

• https://supportportal.juniper.net/JSA100089
• https://www.juniper.net/documentation/us/en/software/junos/junos-install-upgrade/topics/topic-map/vm-host-overview.html#id-routing-engines-with-vm-host-support

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