CVE-2026-33788
Missing Authentication in Juniper Junos PTX FPCs Enables Privilege Escalation
Publication date: 2026-04-09
Last updated on: 2026-04-09
Assigner: Juniper Networks, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| juniper_networks | junos_os_evolved | to 21.2R3-S8-EVO (exc) |
| juniper_networks | junos_os_evolved | to 21.4R3-S7-EVO (exc) |
| juniper_networks | junos_os_evolved | to 22.2R3-S4-EVO (exc) |
| juniper_networks | junos_os_evolved | to 22.3R3-S3-EVO (exc) |
| juniper_networks | junos_os_evolved | to 22.4R3-S2-EVO (exc) |
| juniper_networks | junos_os_evolved | to 23.2R2-EVO (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-306 | The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a Missing Authentication for Critical Function issue in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved on PTX Series devices.
It allows a local, authenticated attacker with low privileges to gain direct access to the installed FPCs as a high privileged user.
Essentially, a user with limited access rights can escalate their privileges and control critical components of the device without proper authentication.
How can this vulnerability impact me? :
The vulnerability can lead to a full compromise of the affected component, as a low privileged local user can gain high privileged access to the Flexible PIC Concentrators.
This means that an attacker could potentially control critical hardware components of the device, which could impact the device's operation, security, and the network it supports.