Juniper Junos OS up to 25.2R1 missing authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Juniper Junos OS up to 25.2R1. This impacts an unknown function. This manipulation causes missing authentication. The identification of this vulnerability is CVE-2025-30650. The attack can only be executed locally. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Juniper Junos OS up to 25.2R1. It has been declared as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A Missing Authentication for Critical Function vulnerability in command processing of Juniper Networks Junos OS allows a privileged local attacker to gain access to line cards running Junos OS Evolved as root. This issue affects systems running Junos OS using Linux-based line cards. Affected line cards include: * MPC7, MPC8, MPC9, MPC10, MPC11 * LC2101, LC2103 * LC480, LC4800, LC9600 * MX304 (built-in FPC) * MX-SPC3 * SRX5K-SPC3 * EX9200-40XS * FPC3-PTX-U2, FPC3-PTX-U3 * FPC3-SFF-PTX * LC1101, LC1102, LC1104, LC1105 This issue affects Junos OS:  * all versions before 22.4R3-S8,  * from 23.2 before 23.2R2-S6,  * from 23.4 before 23.4R2-S6,  * from 24.2 before 24.2R2-S3,  * from 24.4 before 24.4R2, * from 25.2 before 25.2R2.

The weakness was shared by Pierre Emeriaud as JSA107863. It is possible to read the advisory at supportportal.juniper.net. This vulnerability is known as CVE-2025-30650 since 03/24/2025. The exploitation appears to be easy. Attacking locally is a requirement. Additional levels of successful authentication are needed for exploitation. 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 04/09/2026).

The vulnerability scanner Nessus provides a plugin with the ID 305585 (Juniper Junos OS Vulnerability (JSA107863)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 22.4R3-S8, 23.2R2-S6, 23.4R2-S6, 24.2R2-S3, 24.4R2 or 25.2R2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (305585). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.7
VulDB Temp Score: 6.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.7
CNA Vector (juniper): 🔒

CVSSv2info

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

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 305585
Nessus Name: Juniper Junos OS Vulnerability (JSA107863)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Junos OS 22.4R3-S8/23.2R2-S6/23.4R2-S6/24.2R2-S3/24.4R2/25.2R2

Timelineinfo

03/24/2025 CVE reserved
04/08/2026 +379 days Advisory disclosed
04/08/2026 +0 days VulDB entry created
04/09/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: juniper.net

Advisory: JSA107863
Researcher: Pierre Emeriaud
Status: Confirmed

CVE: CVE-2025-30650 (🔒)
GCVE (CVE): GCVE-0-2025-30650
GCVE (VulDB): GCVE-100-356299

Entryinfo

Created: 04/08/2026 20:36
Updated: 04/09/2026 04:10
Changes: 04/08/2026 20:36 (83), 04/09/2026 04:10 (2)
Complete: 🔍
Cache ID: 216::103

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

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