An Allocation of Resources Without Limits or Throttling vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). If a high rate of specific valid packets are processed by the routing engine (RE) this will lead to a loss of connectivity of the RE with other components of the chassis and thereby a complete and persistent system outage. Please note that a carefully designed lo0 firewall filter will block or limit these packets which should prevent this issue from occurring. The following log messages can be seen when this issue occurs: <host> kernel: nf_conntrack: nf_conntrack: table full, dropping packet This issue affects Juniper Networks Junos OS Evolved: * All versions earlier than 20.4R3-S7-EVO; * 21.2R1-EVO and later versions; * 21.4-EVO versions earlier than 21.4R3-S5-EVO; * 22.1-EVO versions earlier than 22.1R3-S2-EVO; * 22.2-EVO versions earlier than 22.2R3-EVO; * 22.3-EVO versions earlier than 22.3R2-EVO; * 22.4-EVO versions earlier than 22.4R2-EVO.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 1 product from juniper organizations running these solutions should prioritize assessment and patching.
Reported in 2024, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2024-01-12T01:15:48.677
2026-06-17T07:09:48.930
Modified
CVSSv3.1: 7.5 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.2 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 21.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.1 | Yes |
| Operating System | juniper | junos_os_evolved | 22.1 | Yes |
| Operating System | juniper | junos_os_evolved | 22.1 | Yes |
| Operating System | juniper | junos_os_evolved | 22.1 | Yes |
| Operating System | juniper | junos_os_evolved | 22.1 | Yes |
| Operating System | juniper | junos_os_evolved | 22.1 | Yes |
| Operating System | juniper | junos_os_evolved | 22.1 | Yes |
| Operating System | juniper | junos_os_evolved | 22.1 | Yes |
| Operating System | juniper | junos_os_evolved | 22.2 | Yes |
| Operating System | juniper | junos_os_evolved | 22.2 | Yes |
| Operating System | juniper | junos_os_evolved | 22.2 | Yes |
| Operating System | juniper | junos_os_evolved | 22.2 | Yes |
| Operating System | juniper | junos_os_evolved | 22.2 | Yes |
| Operating System | juniper | junos_os_evolved | 22.2 | Yes |
| Operating System | juniper | junos_os_evolved | 22.3 | Yes |
| Operating System | juniper | junos_os_evolved | 22.3 | Yes |
| Operating System | juniper | junos_os_evolved | 22.3 | Yes |
| Operating System | juniper | junos_os_evolved | 22.3 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
| Operating System | juniper | junos_os_evolved | 22.4 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For juniper's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.