Improper handling of exceptional conditions in Juniper Junos OS - CVE-2025-21596

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Main Vulnerability Database Vulnerabilities #VU102488

Improper handling of exceptional conditions in Juniper Junos OS - CVE-2025-21596

Published: January 9, 2025


Vulnerability identifier: #VU102488
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21596
CWE-ID: CWE-755
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Juniper Networks, Inc.
Affected software:
Juniper Junos OS

Detailed vulnerability description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of exceptional conditions error in the command-line processing. A local user can cause the chassis daemon (chassisd) to crash and restart, resulting in a temporary Denial of Service (DoS).


How to mitigate CVE-2025-21596

Install updates from vendor's website.

Sources