CVE-2024-39521

HIGH EPSS 16.2%

Published Jul 11, 20241y ago · Modified Jun 17, 20261w ago

8.5 CVSS 4.0

High

Published Jul 11, 2024 1y ago

Last Modified Jun 17, 2026 1w ago

Description

An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attacker with low privileges to escalate their privileges to 'root' leading to a full compromise of the system. The Junos OS Evolved CLI doesn't properly handle command options in some cases, allowing users which execute specific CLI commands with a crafted set of parameters to escalate their privileges to root on shell level. This issue affects Junos OS Evolved: * 21.1-EVO versions 21.1R1-EVO and later before 21.2R3-S8-EVO, * 21.4-EVO versions before 21.4R3-S7-EVO, * 22.1-EVO versions before 22.1R3-S6-EVO, * 22.2-EVO versions before 22.2R3-EVO, * 22.3-EVO versions before 22.3R2-EVO.

CVSS Details

Base Score

8.5

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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:X/R:X/V:X/RE:X/U:X

Attack Vector Local

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

16.2% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-78 OS Command Injection Injection

Affected Products 40

Vendor	Product	Version	Range
juniper	junos_os_evolved	*	≥21.1 – <21.2
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.2	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	21.4	any
juniper	junos_os_evolved	22.2	any
juniper	junos_os_evolved	22.2	any
juniper	junos_os_evolved	22.2	any
juniper	junos_os_evolved	22.2	any
juniper	junos_os_evolved	22.2	any
juniper	junos_os_evolved	22.3	any
juniper	junos_os_evolved	22.3	any
juniper	junos_os_evolved	22.3	any
juniper	junos_os_evolved	22.3	any

References 1

supportportal.juniper.net https://supportportal.juniper.net/JSA82975

Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.