Buffer overflow in Junos OS - CVE-2025-52955
Published: July 18, 2025
Vulnerability identifier: #VU113066
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-52955
CWE-ID: CWE-120
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the routing protocol daemon (rpd). A remote attacker on the local network can initiate sending of specific updates to the jflow/sflow modules, trigger buffer overflow and perform a denial of service (DoS) attack.
Affected software
Junos OS
How to mitigate CVE-2025-52955
Install updates from vendor's website.
Junos OS - addressed in versions 21.2R3-S9, 22.4R3-S7, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1