CVE Catalog

CVE-2025-52960

MediumCVSS 5.9
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.33%

24th percentile - higher than 24% of all known CVEs

Summary

A vulnerability in the SIP ALG of Junos OS on MX and SRX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS) by crashing flowd/mspmand when memory utilization is high and specific SIP packets are received. The system recovers automatically, but continuous attacks can cause a sustained DoS.

Risk Assessment

The vulnerability could lead to significant service disruptions, potentially impacting network availability and critical services.

Recommendation

It is recommended to upgrade Junos OS to a patched version as listed in the description, and to monitor memory utilization and SIP traffic.

Other vulnerabilities in Junos OS

See all
Original NVD description (English source)

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/mspmand 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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS