CVE 5.9 MEDIUM

Junos OS: SRX Series and MX Series: Receipt of specific SIP packets in a high utilization situation causes a flowd crash_CVE-2025-52960

5.9 / 10
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

A Buffer Copy without Checking Size of Input vulnerability in the

Session Initialization Protocol (SIP) ALG of Juniper Networks Junos OS on MX Series and SRX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).

When memory utilization is high, and specific SIP packets are received, flowd crashes. While the system recovers automatically, the disruption can significantly impact service stability. Continuous receipt of these specific SIP packets, while high utilization is present, will cause a sustained DoS condition. The utilization is outside the attackers control, so they would not be able to deterministically exploit this.
This issue affects Junos OS on SRX Series and MX Series: 


* All versions before 22.4R3-S7,
* from 23.2 before 23.2R2-S4,
* from 23.4 before 23.4R2-S5,
* from 24.2 before 24.2R2.

Basic Information

ID CVE-2025-52960
Source juniper
Published Oct 9, 2025 at 15:40
Modified Oct 9, 2025 at 19:49

Affected Product

Vendor Juniper Networks
Product Junos OS
Affected Versions Juniper Networks Junos OS 0
Juniper Networks Junos OS 23.2
Juniper Networks Junos OS 23.4
Juniper Networks Junos OS 24.2

CWE Classification

References

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