CVE-2023-28966

HIGH

Juniper Networks Junos OS Evolved <20.4R3-S5-EVO, <21.2R3-EVO - Pri...

Title source: llm
STIX 2.1

Description

An Incorrect Default Permissions vulnerability in Juniper Networks Junos OS Evolved allows a low-privileged local attacker with shell access to modify existing files or execute commands as root. The issue is caused by improper file and directory permissions on certain system files, allowing an attacker with access to these files and folders to inject CLI commands as root. This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R3-S5-EVO; 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R2-EVO.

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0003
EPSS Percentile 9.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-276
Status published
Products (4)
juniper/junos_os_evolved 20.4 (13 CPE variants)
juniper/junos_os_evolved 21.2 (7 CPE variants)
juniper/junos_os_evolved 21.3 (3 CPE variants)
juniper/junos_os_evolved < 20.4
Published Apr 17, 2023
Tracked Since Feb 18, 2026