Auth bypass in Juniper Junos
CVE-2026-33776
A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a local user with low privileges to read sensitive information. A local user with low privileges can execute the CLI command 'show mgd' with specific arguments which will expose sensitive information. This issue affects Junos OS: * all versions before 22.4R3-S8, * 23.2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S6, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S1, * 25.2 version before 25.2R1-S2, 25.2R2; Junos OS Evolved: * all versions before 23.2R2-S6-EVO, * 23.4 version before 23.4R2-S6-EVO, * 24.2 version before 24.2R2-S4-EVO, * 24.4 versions before 24.4R2-S1-EVO, * 25.2 versions before 25.2R2-EVO.
Vulnerability class: Broken Access Control
EPSS: 0.001 (0.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Juniper Junos — versions 22.4, 23.2, 23.4
- Juniper Junos_os_evolved — versions 23.2, 23.4, 24.2
- Juniper Networks Junos Os — versions 0, 23.2, 23.4
- Juniper Networks Junos Os Evolved — versions 0, 23.4, 24.2
Weakness classification (CWE)
References
- sirt@juniper.net (vendor-advisory, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33776?
- CVE-2026-33776 is a medium-severity vulnerability in Juniper Junos, classified under Missing Authorization. CVSS score: 5.5/10. Published 2026-04-09.
- How severe is CVE-2026-33776?
- Medium severity. CVSS v3 base score is 5.5 out of 10.