Junos OS: EX Series: Unauthorized users can execute service-impacting CLI command
Summary
| CVE | CVE-2026-33802 |
|---|---|
| State | PUBLISHED |
| Assigner | juniper |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-09 22:17:03 UTC |
| Updated | 2026-07-10 17:49:57 UTC |
| Description | A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series allows a local, authenticated attacker to cause a Denial-of-Service (DoS). On EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400 switches, an authenticated, local attacker with no specific permissions or class can execute a specific, privileged CLI 'request' command which will cause complete traffic impact until the system automatically recovers. This issue affects Junos OS on EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400: * 23.2R2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R2, * 25.4 versions before 25.4R1-S1. |
Risk And Classification
Primary CVSS: v4.0 6.8 MEDIUM from [email protected]
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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:A/V:X/RE:M/U:X
EPSS: 0.001230000 probability, percentile 0.024490000 (date 2026-07-12)
Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 6.8 | MEDIUM | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/C... |
| 4.0 | CNA | CVSS | 6.8 | MEDIUM | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/... |
| 3.1 | [email protected] | Secondary | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
CVSS v4.0 Breakdown
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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:A/V:X/RE:M/U:X
CVSS v3.1 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Juniper Networks | Junos OS | affected 23.2R2 23.2R2-S6 custom | EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000 |
| CNA | Juniper Networks | Junos OS | affected 23.4 23.4R2-S8 custom | EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000 |
| CNA | Juniper Networks | Junos OS | affected 24.2 24.2R2-S4 custom | EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000 |
| CNA | Juniper Networks | Junos OS | affected 24.4 24.4R2-S3 custom | EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000 |
| CNA | Juniper Networks | Junos OS | affected 25.2 25.2R2 custom | EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000 |
| CNA | Juniper Networks | Junos OS | affected 25.4 25.4R1-S1 custom | EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000 |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| supportportal.juniper.net/JSA110077 | [email protected] | supportportal.juniper.net | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
Solutions
CNA: The following software releases have been updated to resolve this specific issue: Junos OS: 23.2R2-S6, 23.4R2-S8, 24.2R2-S4, 24.4R2-S3, 25.2R2, 25.4R1-S1, 25.4R2, 26.2R1, and all subsequent releases.
Workarounds
CNA: There are no known workarounds for this issue. To reduce the risk of exploitation use command authorization to limit access to 'request' commands.
Exploits
CNA: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.