PT-2026-31753 · Juniper Networks · Junos Evolved+2

Published 2026-04-09 · Updated 2026-04-10 · CVE-2026-33788

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS Evolved on PTX Series versions prior to 21.2R3-S8-EVO, versions 21.4-EVO prior to 21.4R3-S7-EVO, versions 22.2-EVO prior to 22.2R3-S4-EVO, versions 22.3-EVO prior to 22.3R3-S3-EVO, versions 22.4-EVO prior to 22.4R3-S2-EVO, and versions 23.2-EVO prior to 23.2R2-EVO.

Description A Missing Authentication for Critical Function vulnerability exists in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved on PTX Series. A local attacker with low privileges can gain direct access to FPCs installed in the device. This access allows the attacker to operate as a high-privileged user on the FPCs, potentially leading to a full compromise of the affected component.

Recommendations Update to a version after 21.2R3-S8-EVO. Update to a version after 21.4R3-S7-EVO. Update to a version after 22.2R3-S4-EVO. Update to a version after 22.3R3-S3-EVO. Update to a version after 22.4R3-S2-EVO. Update to a version after 23.2R2-EVO.

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-33788

Affected Products

Flexible Pic Concentrators

Junos Evolved

Ptx Series

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-33788 · Security Note
• https://kb.juniper.net/JSA107806 · Vendor Advisory
• https://twitter.com/infoflowcloud/status/2042366057805976015 · Twitter Post
• https://twitter.com/ptdbugs/status/2042544971937386869 · Twitter Post
• https://twitter.com/CVEnew/status/2042364310974824650 · Twitter Post