CVE-2024-39532: Junos OS and Junos OS Evolved: Confidential information in logs can be accessed by another user

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-11 · updated 2026-06-17
Weakness: CWE-532

Description

An Insertion of Sensitive Information into Log File vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with high privileges to access sensitive information. When another user performs a specific operation, sensitive information is stored as plain text in a specific log file, so that a high-privileged attacker has access to this information. This issue affects: Junos OS: * All versions before 21.2R3-S9; * 21.4 versions before 21.4R3-S9; * 22.2 versions before 22.2R2-S1, 22.2R3; * 22.3 versions before 22.3R1-S1, 22.3R2; Junos OS Evolved: * All versions before before 22.1R3-EVO; * 22.2-EVO versions before 22.2R2-S1-EVO, 22.2R3-EVO; * 22.3-EVO versions before 22.3R1-S1-EVO, 22.3R2-EVO.

Affected products

Juniper Junos OS: before 21.2; 21.2, 21.2-r1, 21.2-r1-s1, 21.2-r1-s2, 21.2-r2, 21.2-r2-s1 (+35) — fixed in 21.2
Juniper Networks Junos OS Evolved: 22.1, 22.1-r1, 22.1-r1-s1, 22.1-r1-s2, 22.1-r2, 22.1-r2-s1 (+9)

How to fix

Upgrade to a fixed version: Juniper Junos OS 21.2. Check the vendor advisory for mitigations.

References

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