CVE-2026-102083
Received
Received - Intake
Improper Resource Locking in Juniper Junos OS on SRX Series
Vulnerability report for CVE-2026-102083, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-14
Last updated on: 2026-10-14
Assigner: Juniper Networks, Inc.
Description
Description
An Improper Resource Locking vulnerability in the UTM processing of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).
When UTM WebFiltering is configured and the WebFiltering cloud server is unreachable, sustained HTTP traffic load may cause the UTM subsystem to crash and restart, which will lead to a complete service outage until the system has recovered.
When category lookup requests cannot be completed, they accumulate internally. Under high load and specific timing conditions, an invalid internal state can occur during cleanup of pending WebFiltering lookups, resulting in a crash of the UTM process.
This issue applies to both NextGeneration WebFiltering (NGWF) and Enhanced WebFiltering (EWF).
This issue affects Junos OS on SRX Series:
* 23.2 versions from 23.2R2 before 23.2R2-S7.7;
* 23.4 versions from 23.4R2 before 23.4R2-S8.13;
* 24.2 versions before 24.2R2-S5.5;
* 24.4 versions before 24.4R2-S4;
* 25.2 versions before 25.2R2-S1;
* 25.4 versions before 25.4R1-S3, 25.4R2.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Juniper | Networks | Junos OS 23.2R2 |
| Juniper | Networks | Junos OS 23.4R2 |
| Juniper | Networks | Junos OS 24.2 |
| Juniper | Networks | Junos OS 24.4 |
| Juniper | Networks | Junos OS 25.2 |
| Juniper | Networks | Junos OS 25.4 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-413 | The product does not lock or does not correctly lock a resource when the product must have exclusive access to the resource. |
