Missing Authentication Vulnerability in Juniper Networks Junos OS Evolved on PTX Series
CVE-2026-33788

8.5HIGH

Key Information:

Vendor

Juniper Networks
Status
Junos Os Evolved
Vendor
CVE Published:
9 April 2026

Badges

👾 Exploit Exists

What is CVE-2026-33788?

A Missing Authentication for Critical Function vulnerability affects Juniper Networks' Junos OS Evolved on PTX Series devices. This vulnerability permits a local user with low privileges to gain unauthorized access to the Flexible PIC Concentrators (FPCs) installed in the device. Once exploited, an attacker could escalate privileges and potentially compromise the entire component, posing significant security risks to affected systems.

Affected Version(s)

Junos OS Evolved PTX Series 0 < 21.2R3-S8-EVO

Junos OS Evolved PTX Series 21.4-EVO < 21.4R3-S7-EVO

Junos OS Evolved PTX Series 22.2-EVO < 22.2R3-S4-EVO

References

https://kb.juniper.net/JSA107806
vendor-advisory

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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