An Incorrect Initialization of Resource vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX Series and QFX Series device allows an unauthenticated, network-based attacker to cause an integrity impact to downstream networks. When the same family inet or inet6 filter is applied on an IRB interface and on a physical interface as egress filter on EX4100, EX4400, EX4650 and QFX5120 devices, only one of the two filters will be applied, which can lead to traffic being sent out one of these interfaces which should have been blocked. This issue affects Junos OS on EX Series and QFX Series: * 23.4 version 23.4R2-S6, * 24.2 version 24.2R2-S3. No other Junos OS versions are affected.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.8, 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 limited integrity, for affected systems. Impacting 27 products from juniper, from juniper, from juniper and 24 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2026, 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.
2026-04-09T22:16:25.590
2026-04-17T17:56:54.663
Analyzed
CVSSv3.1: 5.8 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | juniper | junos | 23.4 | Yes |
| Operating System | juniper | junos | 24.2 | Yes |
| Hardware | juniper | ex2300 | - | No |
| Hardware | juniper | ex2300-c | - | No |
| Hardware | juniper | ex3400 | - | No |
| Hardware | juniper | ex4000 | - | No |
| Hardware | juniper | ex4100 | - | No |
| Hardware | juniper | ex4100-f | - | No |
| Hardware | juniper | ex4100-h | - | No |
| Hardware | juniper | ex4300 | - | No |
| Hardware | juniper | ex4400 | - | No |
| Hardware | juniper | ex4600 | - | No |
| Hardware | juniper | ex4650 | - | No |
| Hardware | juniper | ex9204 | - | No |
| Hardware | juniper | ex9208 | - | No |
| Hardware | juniper | ex9214 | - | No |
| Hardware | juniper | qfx10008 | - | No |
| Hardware | juniper | qfx10016 | - | No |
| Hardware | juniper | qfx5110 | - | No |
| Hardware | juniper | qfx5120 | - | No |
| Hardware | juniper | qfx5130 | - | No |
| Hardware | juniper | qfx5200 | - | No |
| Hardware | juniper | qfx5210 | - | No |
| Hardware | juniper | qfx5220 | - | No |
| Hardware | juniper | qfx5230-64cd | - | No |
| Hardware | juniper | qfx5240 | - | No |
| Hardware | juniper | qfx5241 | - | No |
| Hardware | juniper | qfx5700 | - | No |
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.