Improper input validation in Junos OS - CVE-2025-30649
Published: April 18, 2025
Vulnerability identifier: #VU107617
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-30649
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation error in the syslog stream TCP transport . A remote non-authenticated attacker can send specific spoofed packets to cause a CPU Denial of Service (DoS) to the MX-SPC3 SPUs.
Affected software
Junos OS
How to mitigate CVE-2025-30649
Install updates from vendor's website.
Junos OS - addressed in versions 22.2R3-S6, 22.4R3-S4, 23.2R2-S3, 23.4R2-S4, 24.2R1-S2, 24.2R2, 24.4R1