CVE-2024-39512

Junos OS Evolved: User is not logged out when the console cable is disconnected

MEDIUM
6.6
CVSS Score
Published: July 10, 2024 at 11:02 PM UTC
Updated: June 17, 2026 at 07:42 AM UTC
2 products affected across 2 vendorsJunos OS EvolvedJunos OS Evolved

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Severity
MEDIUM6.6
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

An Improper Physical Access Control vulnerability in the console port control of Juniper Networks Junos OS Evolved allows an attacker with physical access to the device to get access to a user account. When the console cable is disconnected, the logged in user is not logged out. This allows a malicious attacker with physical access to the console to resume a previous session and possibly gain administrative privileges. This issue affects Junos OS Evolved: * from 23.2R2-EVO before 23.2R2-S1-EVO,  * from 23.4R1-EVO before 23.4R2-EVO.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

23.2R2-EVO ≤ v < 23.2R2-S1-EVO23.4R1-EVO ≤ v < 23.4R2-EVO23.2 r223.2R2-EVO23.4 r123.4 r1-s123.4 r1-s223.4R1-EVO
Affected range stops below 23.2R2-S1-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 23.4R2-EVO, so it looks safe — our inference, not a vendor statement
23.2R2-EVO ≤ v < 23.2R2-S1-EVO23.4R1-EVO ≤ v < 23.4R2-EVO23.2R2-EVO23.4R1-EVO
Affected range stops below 23.2R2-S1-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 23.4R2-EVO, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.6MEDIUMjuniper
Attack Vector
PHYSICAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-1263NVD-CWE-Other

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