Juniper Networks Security Advisories & CVEs
3 advisories tracked · Juniper SIRT (JSA) via NVD · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Official source
Juniper SIRT (JSA) via NVD
Juniper's advisory portal (kb.juniper.net) is a login-walled Salesforce app, so VulniPulse ingests Juniper SIRT (JSA) advisories from NVD, filtered to Juniper's own CNA (sirt@juniper.net) — official, machine-readable data with the affected Junos releases in each description. Junos on SRX/MX/EX/QFX and Junos Space are the common targets.
Latest Juniper advisories
Critical [CVE-2026-33784] Use of Default Password vulnerability in the Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-based attacker to take full control of the device
A Use of Default Password vulnerability in the Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-based attacker to take full control of the device. vLWC software images ship with an initial password for a high privileged account. A change of this password is not enforced during the provisioning of the software, which can make full access to the system by unauthorized actors possible. This issue affects all versions of vLWC before 3.0.94.
Critical [CVE-2026-21902] Junos: Incorrect Permission Assignment for Critical Resource vulnerability in the On-Box Anomaly detection framework of Juniper…
An Incorrect Permission Assignment for Critical Resource vulnerability in the On-Box Anomaly detection framework of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to execute code as root. The On-Box Anomaly detection framework should only be reachable by other internal processes over the internal routing instance, but not over an externally exposed port. With the ability to access and manipulate the service to execute code as root a remote attacker can take complete control of the device. Please note that this service is enabled by default as no specific configuration is required. This issue affects Junos OS Evolved on PTX Series: - 25.4 versions before 25.4R1-S1-EVO, 25.4R2-EVO. This issue does not affect Junos OS. Affected products named by the advisory: EX.
Critical [CVE-2025-21589] Authentication Bypass Using an Alternate Path or Channel vulnerability in Juniper Networks Session Smart Router may
An Authentication Bypass Using an Alternate Path or Channel vulnerability in Juniper Networks Session Smart and take administrative control of the device. This issue affects Session Smart Router: - from 5.6.7 before 5.6.17, This issue affects WAN Assurance Managed Routers: