CVSS 3.1 Score 6.5 of 10 (medium)


Published Apr 12, 2024
Updated: Apr 15, 2024
CWE ID 401


CVE-2024-21609 is a vulnerability in the IKE daemon (iked) of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series. It allows an attacker who can establish IPsec tunnels to cause a Denial of Service (DoS) by exploiting a missing release of memory after effective lifetime. This occurs during IPsec SA rekey with specific message sequences, leading to a memory leak and eventual iked process crash and restart. The affected versions are all prior to 20.4R3-S9. Organizations can check the iked process memory consumption using a specific command. The vulnerability has a base severity rating of MEDIUM, with an exploitability score of 2.8 and an impact score of 3.6.

Explore Beyond the CVE Basics with Recorded Future's Vulnerability Intelligence

Note: This is just a basic overview providing quick insights into CVE-2024-21609 information. Gain full access to comprehensive CVE data, risk scores, prioritization, and mitigation data through Recorded Future's Vulnerability Intelligence:
  • Prioritize with Risk-Based Scoring
  • Explore the Extensive Vulnerability Database
  • Receive Early Alerts on Emerging CVEs
  • Focus on Critical Exploitable Vulnerabilities
  • Streamline Remediation with Integration Options