Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2024-21603

An Improper Check for Unusual or Exceptional Conditions vulnerability in the kernel of Juniper Network Junos OS on MX Series allows a network based attacker with low privileges to cause a denial of service. If a scaled configuration for Source class usage (SCU) / destination class usage (DCU) (more than 10 route classes) is present and the SCU/DCU statistics are gathered by executing specific SNMP requests or CLI commands, a 'vmcore' for the RE kernel will be seen which leads to a device restart. Continued exploitation of this issue will lead to a sustained DoS. This issue only affects MX Series devices with MPC10, MPC11 or LC9600, and MX304. No other MX Series devices are affected. This issue affects Juniper Networks Junos OS: * All versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S6; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3; * 22.1 versions earlier than 22.1R3; * 22.2 versions earlier than 22.2R2; * 22.3 versions earlier than 22.3R2.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 27.8%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2024-21603
  • Juniper » Junos » Version: 20.4
    cpe:2.3:o:juniper:junos:20.4
  • Juniper » Junos » Version: 21.2
    cpe:2.3:o:juniper:junos:21.2
  • Juniper » Junos » Version: 21.3
    cpe:2.3:o:juniper:junos:21.3
  • Juniper » Junos » Version: 21.4
    cpe:2.3:o:juniper:junos:21.4
  • Juniper » Junos » Version: 22.1
    cpe:2.3:o:juniper:junos:22.1
  • Juniper » Junos » Version: 22.2
    cpe:2.3:o:juniper:junos:22.2
  • Juniper » Junos » Version: 22.3
    cpe:2.3:o:juniper:junos:22.3


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