Junos OS (SRX firewalls)
CVE-2026-33802: EX Series: Unauthorized users can execute service-impacting CLI command
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).
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Junos OS (EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000) 23.2R2 | 23.2R2-S6 or later |
| Junos OS (EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000) 23.4 | 23.4R2-S8 or later |
| Junos OS (EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000) 24.2 | 24.2R2-S4 or later |
| Junos OS (EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000) 24.4 | 24.4R2-S3 or later |
| Junos OS (EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000) 25.2 | 25.2R2 or later |
| Junos OS (EX4100, EX4300-MP (Multigigabit), EX2300, EX4400, EX4000) 25.4 | 25.4R1-S1 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Workarounds
There are no known workarounds for this issue. To reduce the risk of exploitation use command authorization to limit access to 'request' commands.
Exploitation
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.