SB2025071839 - Improper Handling of Length Parameter Inconsistency in Junos OS Evolved and Juniper Junos OS
Published: July 18, 2025
Security Bulletin ID
SB2025071839
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Handling of Length Parameter Inconsistency (CVE-ID: CVE-2025-52949)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper handling of length parameter inconsistency error in the routing protocol daemon (rpd). A remote BGP peer can send a specifically malformed BGP packet and cause rpd to crash and restart, resulting in a Denial of Service (DoS).
Remediation
Install update from vendor's website.