Missing release of memory after effective lifetime in Junos OS and Junos OS Evolved - CVE-2025-21595
Published: April 14, 2025
Vulnerability identifier: #VU107433
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-2025-21595
CWE-ID: CWE-401
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 missing release of memory after effective lifetime error in the Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause an FPC to crash, leading to Denial of Service (DoS).
Affected software
Junos OS
Junos OS Evolved
Junos OS Evolved
How to mitigate CVE-2025-21595
Install updates from vendor's website.
Junos OS - addressed in versions 21.2R3-S7, 21.4R3-S4, 22.2R3-S1, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1
Junos OS Evolved - addressed in versions 21.2R3-S7-EVO, 21.4R3-S4-EVO, 22.2R3-S1-EVO, 22.3R3-S1-EVO, 22.4R3-EVO, 23.2R1-EVO
Junos OS Evolved - addressed in versions 21.2R3-S7-EVO, 21.4R3-S4-EVO, 22.2R3-S1-EVO, 22.3R3-S1-EVO, 22.4R3-EVO, 23.2R1-EVO