CVE-2025-52983

Junos OS: After removing ssh public key authentication root can still log in

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.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 22.2R3-S7, 22.4R3-S5, 23.2R2-S3, 23.4R2-S3, 24.2R1-S2, 24.2R2, 24.4R1, and all subsequent releases.

Workaround:

  • To prevent this issue from being ocuring, public key authentication for root can be explicitly disabled with: [ system root-authentication no-public-keys ]

Category

8.6
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://supportportal.juniper.net/JSA100089 vendor advisory
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 technical description

Frequently Asked Questions

What is the severity of CVE-2025-52983?
CVE-2025-52983 has been scored as a high severity vulnerability.
How to fix CVE-2025-52983?
To fix CVE-2025-52983: The following software releases have been updated to resolve this specific issue: 22.2R3-S7, 22.4R3-S5, 23.2R2-S3, 23.4R2-S3, 24.2R1-S2, 24.2R2, 24.4R1, and all subsequent releases.
Is CVE-2025-52983 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-52983 is being actively exploited.
What software or system is affected by CVE-2025-52983?
CVE-2025-52983 affects Juniper Networks Junos OS.
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