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Juniper Networks — Vulnerabilities & Security Advisories 915

Browse all 915 CVE security advisories affecting Juniper Networks. AI-powered Chinese analysis, POCs, and references for each vulnerability.

Juniper Networks operates as a global provider of networking hardware, software, and services, primarily focusing on enterprise and service provider infrastructure. With 893 recorded Common Vulnerabilities and Exposures, the company’s attack surface reflects the complexity of its extensive product portfolio. Historically, vulnerabilities in its systems have frequently involved remote code execution, cross-site scripting, and privilege escalation flaws, often stemming from input validation errors or improper access controls in management interfaces. Notable incidents include critical flaws in ScreenOS and Junos OS that allowed attackers to bypass authentication or execute arbitrary commands, highlighting risks in legacy and core routing platforms. These issues underscore the necessity for rigorous patch management and secure configuration practices. As a foundational element of global internet infrastructure, the security posture of Juniper Networks directly impacts the stability and integrity of connected networks worldwide, necessitating continuous monitoring and proactive defense strategies.

CVE ID Title CVSS Severity Published
CVE-2021-0258 Junos OS: Kernel panic upon receipt of specific TCPv6 packet on management interface — Junos OS CWE-362 5.9 Medium 2021-04-22
CVE-2021-0256 Junos OS: mosquitto Local Privilege Escalation vulnerability in SUID binaries — Junos OS CWE-250 5.5 Medium 2021-04-22
CVE-2021-0257 Junos OS: MX Series, EX9200 Series: Trio-based MPCs memory leak in VPLS with integrated routing and bridging (IRB) interface — Junos OS CWE-400 6.5 Medium 2021-04-22
CVE-2021-0255 Junos OS: ethtraceroute Local Privilege Escalation vulnerability in SUID binaries — Junos OS CWE-250 5.5 Medium 2021-04-22
CVE-2021-0253 Junos OS: NFX Series: Local Command Execution Vulnerability in JDMD Leads to Privilege Escalation — Junos OS CWE-77 7.8 High 2021-04-22
CVE-2021-0254 Junos OS: Remote code execution vulnerability in overlayd service — Junos OS CWE-131 9.8 Critical 2021-04-22
CVE-2021-0252 Junos OS: NFX Series: Local Code Execution Vulnerability in JDMD Leads to Privilege Escalation — Junos OS CWE-77 7.8 High 2021-04-22
CVE-2021-0250 Junos OS and Junos OS Evolved: An attacker sending a specific crafted BGP update message will crash RPD — Junos OS 7.5 High 2021-04-22
CVE-2021-0251 Junos OS: MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC: The BRAS Subscriber Services service activation portal is vulnerable to a Denial of Service (DoS) via malformed HTTP packets — Junos OS 8.6 High 2021-04-22
CVE-2021-0249 Junos OS: SRX Series: A remote attacker may be able to cause a PFE buffer overflow to arbitrarily remotely execute code or commands on the target device with UTM enabled. — Junos OS 8.1 High 2021-04-22
CVE-2021-0247 Junos OS: PTX Series, QFX Series: Due to a race condition input loopback firewall filters applied to interfaces may not operate even when listed in the running configuration. — Junos OS CWE-362 5.1 Medium 2021-04-22
CVE-2021-0248 NFX Series: Hard-coded credentials allow an attacker to take control of any instance through administrative interfaces. — Junos OS CWE-798 10.0 Critical 2021-04-22
CVE-2021-0246 Junos OS: SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3: In a multi-tenant environment, a tenant host administrator may be able to jailbreak out of their network impacting other tenant networks or gather information from other networks. — Junos OS 7.3 High 2021-04-22
CVE-2021-0244 Junos OS: A race condition in the storm control profile may allow an attacker to cause a Denial of Service condition — Junos OS 7.4 High 2021-04-22
CVE-2021-0245 Junos OS: Junos Fusion: Hard-coded credentials on satellite devices allows a locally authenticated attacker to elevate their privileges. — Junos OS CWE-798 7.8 High 2021-04-22
CVE-2021-0243 Junos OS: EX4300: Stateless firewall policer fails to discard traffic — Junos OS CWE-241 4.7 Medium 2021-04-22
CVE-2021-0241 Junos OS: Receipt of specific DHCPv6 packet may cause jdhcpd to crash and restart — Junos OS CWE-703 7.4 High 2021-04-22
CVE-2021-0242 Junos OS: EX4300: FPC crash upon receipt of specific frames on an interface without L2PT or dot1x configured — Junos OS CWE-119 6.5 Medium 2021-04-22
CVE-2021-0240 Junos OS: Receipt of malformed DHCPv6 packets causes jdhcpd to crash and restart. — Junos OS CWE-703 7.4 High 2021-04-22
CVE-2021-0238 Junos OS: MX Series: Executing CLI command repetitively may cause the system to run out of disk space — Junos OS CWE-400 5.5 Medium 2021-04-22
CVE-2021-0239 Junos OS Evolved: Denial of Service due to receipt of specific genuine layer 2 frames. — Junos OS Evolved CWE-754 6.5 Medium 2021-04-22
CVE-2021-0237 Junos OS: EX4300-MP/EX4600/EX4650/QFX5K Series: Packet Forwarding Engine manager (FXPC) process crashes when deployed in a Virtual Chassis (VC) configuration — Junos OS 6.5 Medium 2021-04-22
CVE-2021-0235 Junos OS: SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3, vSRX Series: In a multi-tenant environment, a tenant host administrator may configure logical firewall isolation affecting other tenant networks — Junos OS CWE-276 7.3 High 2021-04-22
CVE-2021-0236 Junos OS: A specific BGP VPNv6 flowspec message causes routing protocol daemon (rpd) process to crash with a core. — Junos OS CWE-754 6.5 Medium 2021-04-22
CVE-2021-0234 Junos OS: QFX5100-96S: DDoS protection does not work as expected. — Junos OS 5.8 Medium 2021-04-22
CVE-2021-0232 Paragon Active Assurance: Authentication bypass vulnerability in Control Center — Paragon Active Assurance CWE-284 7.4 High 2021-04-22
CVE-2021-0233 Junos OS: ACX500 Series, ACX4000 Series: Denial of Service due to FFEB crash while processing high rate of specific packets. — Junos OS CWE-794 7.5 High 2021-04-22
CVE-2021-0231 Junos OS: SRX, vSRX Series: J-Web Path traversal vulnerability in SRX and vSRX Series leads to information disclosure. — Junos OS CWE-22 6.5 Medium 2021-04-22
CVE-2021-0229 Junos OS: Receipt of specific packets could lead to Denial of Service in MQTT Server — Junos OS CWE-400 5.3 Medium 2021-04-22
CVE-2021-0230 Junos OS: SRX Series: Memory leak when querying Aggregated Ethernet (AE) interface statistics — Junos OS CWE-400 7.5 High 2021-04-22

This page lists every published CVE security advisory associated with Juniper Networks. Each entry links to a detailed page with CVSS scoring, CWE classification, affected products and references. AI-generated Chinese analysis is provided for fast triage.