CVE-2026-102081
Received
Received - Intake
Memory Leak in Juniper Junos OS PFE
Vulnerability report for CVE-2026-102081, 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
A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS).
On SRX4000 Series, and SRX5000 Series with SPC3, and MX Series with SPC3, when one or more specific application services like ALGs, IDP/DPI, APPID, SECINTEL, AAMW or AppQoE are configured, a high connections per second churn will cause PFE memory to leak. If the memory is exhausted traffic processing will be impacted.
Use the CLI command show security monitoring to monitor the memory utilization of the PFEs on the FPCs.
This issue affects Junos OS on SRX Series and MX Series:
* 23.4 versions from 23.4R2-S3 before 23.4R2-S7;
* 24.2 versions from 24.2R2 before 24.2R2-S3;
* 24.4 versions before 24.4R2-S3;
* 25.2 versions before 25.2R1-S2, 25.2R2.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Juniper | Networks | Junos OS 23.4R2-S3 |
| Juniper | Networks | Junos OS 24.2R2 |
| Juniper | Networks | Junos OS 24.4 |
| Juniper | Networks | Junos OS 25.2 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-401 | The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. |
