SB2025101391 - Buffer overflow in Juniper Junos OS
Published: October 13, 2025
Security Bulletin ID
SB2025101391
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2025-52960)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
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.
Remediation
Install update from vendor's website.