Juniper Junos OS up to 25.4R1-S0 CLI authorization

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.56

Summaryinfo

A vulnerability identified as critical has been detected in Juniper Junos OS up to 25.4R1-S0. Affected by this issue is some unknown functionality of the component CLI. This manipulation causes authorization. This vulnerability appears as CVE-2026-33802. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability was found in Juniper Junos OS up to 25.4R1-S0. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component CLI. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect availability. The summary by CVE 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.

It is possible to read the advisory at supportportal.juniper.net. This vulnerability is known as CVE-2026-33802 since 03/23/2026. The exploitation appears to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/10/2026).

Upgrading to version 23.2R2-S6, 23.4R2-S8, 24.2R2-S4, 24.4R2-S3, 25.2R2 or 25.4R1-S1 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Junos OS 23.2R2-S6/23.4R2-S8/24.2R2-S4/24.4R2-S3/25.2R2/25.4R1-S1

Timelineinfo

03/23/2026 CVE reserved
07/09/2026 +107 days Advisory disclosed
07/09/2026 +0 days VulDB entry created
07/10/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: juniper.net

Advisory: supportportal.juniper.net
Status: Confirmed

CVE: CVE-2026-33802 (🔒)
GCVE (CVE): GCVE-0-2026-33802
GCVE (VulDB): GCVE-100-377323

Entryinfo

Created: 07/10/2026 00:00
Changes: 07/10/2026 00:00 (54)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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