EUVD-2026-21093

| CVE-2026-33788 HIGH
2026-04-09 juniper GHSA-w5q7-9fqr-f6hx
8.5
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:M/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
EUVD ID Assigned
Apr 09, 2026 - 21:45 euvd
EUVD-2026-21093
Analysis Generated
Apr 09, 2026 - 21:45 vuln.today
CVE Published
Apr 09, 2026 - 21:27 nvd
HIGH 8.5

Tags

Authentication Bypass Juniper Junos Os Evolved

Description

A Missing Authentication for Critical Function vulnerability in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved on PTX Series allows a local, authenticated attacker with low privileges to gain direct access to FPCs installed in the device. A local user with low privileges can gain direct access to the installed FPCs as a high privileged user, which can potentially lead to a full compromise of the affected component. This issue affects Junos OS Evolved on PTX10004, PTX10008, PTX100016, with JNP10K-LC1201 or JNP10K-LC1202: * All versions before 21.2R3-S8-EVO, * 21.4-EVO versions before 21.4R3-S7-EVO, * 22.2-EVO versions before 22.2R3-S4-EVO, * 22.3-EVO versions before 22.3R3-S3-EVO, * 22.4-EVO versions before 22.4R3-S2-EVO, * 23.2-EVO versions before 23.2R2-EVO.

Analysis

Local privilege escalation in Juniper Networks Junos OS Evolved on PTX Series routers allows authenticated users with low privileges to gain high-privileged direct access to Flexible PIC Concentrators (FPCs), enabling potential full compromise of affected line cards. Impacts PTX10004, PTX10008, PTX10016 with JNP10K-LC1201 or JNP10K-LC1202 line cards across multiple firmware branches. …

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Remediation

Within 24 hours: Inventory all PTX Series routers (PTX10004, PTX10008, PTX10016) with JNP10K-LC1201 or JNP10K-LC1202 line cards and current firmware versions; restrict administrative access to only necessary personnel with credential rotation. Within 7 days: Enable enhanced logging and monitoring of FPC management access; document baseline configurations for affected systems; establish communication channel with Juniper support for patch availability timeline. …

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Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +42
POC: 0

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EUVD-2026-21093 vulnerability details – vuln.today
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