CVE-2019-0048

CVE-2019-0048 affects Juniper Networks Junos OS on the EX4300 Series. Root cause: with TCAM optimization enabled, an implicit loopback filter rule (high priority) meant for 224.0.0.x incorrectly matches 224.x.x.x, causing multicast firewall behavior to break when a filter is applied on the loopba...

CVE-2021-0210

CVE-2021-0210 affects Juniper Networks Junos OS and specifically the J-Web interface. The vulnerability is an information exposure flaw that enables an unauthenticated attacker to leverage an authenticated user session to elevate privileges. Affected versions include multiple release tracks acros...

CVE-2024-30395

CVE-2024-30395 describes an improper validation of a BGP tunnel encapsulation attribute in Junos OS and Junos OS Evolved RPD, leading to an unauthenticated, network-based DoS. A BGP update containing a specifically malformed TLV can cause Routing Protocol Daemon (rpd) to crash and restart. Affect...

CVE-2021-0202

CVE-2021-0202 affects Juniper Junos OS on MX Series and EX9200 Series with Trio-based MPC when an Integrated Routing and Bridging (IRB) interface is mapped to a VPLS instance or a Bridge-Domain. The issue is a memory leak in the Modular Port Concentrator (MPC) caused by certain CE device events, ...

CVE-2024-30392

CVE-2024-30392 describes a Stack-based Buffer Overflow in Juniper Junos OS Flow Processing Daemon (flowd) on MX platforms with SPC3 and MS-MPC/-MIC. When URL filtering is enabled, receiving a specific URL request can crash flowd and restart the PFE, causing a sustained DoS. Affected Junos OS vers...

CVE-2025-21601

CVE-2025-21601 affects Juniper Networks Junos OS on SRX/EX/MX/QFX series. The issue is an Improper Following of Specification by Caller in web management components (J-Web, Captive Portal, 802.1X, JSC) that allows an unauthenticated, network-based attacker to force high CPU usage by sending genui...

CVE-2021-31382

CVE-2021-31382 describes a race condition in Juniper Junos OS on PTX1000 and PTX10002-60C systems that, after upgrading to an affected release, can cause misassignment of firewall filters to interfaces due to contention between chassisd and dfwd. This may result in interfaces having incorrect pro...

CVE-2022-22163

CVE-2022-22163 : The Junos OS DHCP daemon (jdhcpd) has an improper input validation vulnerability that enables an adjacent unauthenticated attacker to crash jdhcpd and cause a Denial of Service (DoS) when a device is configured as a DHCPv6 local server with persistent storage enabled, by processi...

CVE-2021-0208

Technical details beyond the initial description are not provided in the connected documents; monitor for updates on CVE-2021-0208 via Juniper/NCSC pages.

CVE-2023-44176

CVE-2023-44176 is a stack-based buffer overflow in the CLI command processing of Juniper Networks Junos OS. The vulnerability allows a low-privileged attacker to execute specific CLI commands, triggering a Denial of Service with repeated actions potentially sustaining it. Affected Junos OS versio...

CVE-2025-30644

CVE-2025-30644 is a heap-based buffer overflow in the FPC of Juniper Junos OS on EX2300/EX3400/EX4100/EX4300/EX4300MP/EX4400/EX4600/EX4650-48Y and QFX5k. The issue allows an attacker to send a specific DHCP packet (DHCP Option 82 scenario can trigger memory corruption) that crashes the FPC and re...

CVE-2025-30656

CVE-2025-30656 describes an Improper Handling of Additional Special Element vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series (MS-MPC, MS-MIC, SPC3) and SRX Series. The issue can allow an unauthenticated, network-based attacker to cause a sustained Deni...

CVE-2021-0207

CVE-2021-0207 describes a DoS in Juniper Networks Junos OS caused by an improper interpretation conflict of certain data between software components, where specific traffic received on an ingress interface is filtered and redirected to a different VLAN, preventing forwarding. The issue affects IP...

CVE-2024-21605

CVE-2024-21605 - Junos OS SRX 300 Series PFE DoS : A resource overload DoS can be triggered by specific link-local traffic that is not blocked for STP-blocked ports, sending traffic to the control plane and exhausting resources. This is an Exposure of Resource to Wrong Sphere vulnerability in the...

CVE-2024-30391

CVE-2024-30391 describes a Missing Authentication for Critical Function in Junos OS PFE (MX Series with SPC3 and SRX Series). When IPsec uses hmac-sha-384 or hmac-sha-512, traffic exiting the tunnel is not authenticated and ingress is not expected to be authenticated, which can lead to limited im...

CVE-2021-0204

CVE-2021-0204 is a local privilege escalation in Juniper Networks Junos OS, affecting the delta-export configuration utility (dexp). The issue arises because dexp is shipped with setuid root ownership, allowing a locally authenticated shell user to run dexp with root privileges and access sensiti...

CVE-2021-0215

The CVE-2021-0215 issue is a memory leak in Juniper Junos OS on EX/QFX/MX/SRX devices triggered when the 802.1X authenticator port interface flaps. The pfex process (packet forwarding) can crash and restart as memory grows. Several Junos OS releases are affected across multiple lines and versions...

CVE-2021-0222

CVE-2021-0222 is a Denial of Service (DoS) vulnerability in Juniper Networks Junos OS. The issue arises when an adjacent device sends crafted IPv4/IPv6 protocol packets with invalid payloads; these packets are (incorrectly) replicated and sent toward the Routing Engine, leading to an extended DoS...

CVE-2021-0283

CVE-2021-0283 is a buffer overflow in Juniper Networks Junos OS TCP/IP stack that enables DoS by sending crafted packets to the device. According to the sources, affected Junos OS versions include 12.3 before 12.3R12-S19; 15.1 before 15.1R7-S10; 16.1 (R1 and later), 16.2 (R1 and later), 17.1 (R1 ...

CVE-2021-31362

The CVE-2021-31362 issue is a Protection Mechanism Failure in Juniper Networks Junos OS and Junos OS Evolved RPD (routing protocol daemon). An adjacent unauthenticated attacker can disable established IS-IS adjacencies by sending a spoofed hello PDU, causing an immediate DoS with sustained impact...

CVE-2022-22159

CVE-2022-22159 affects Juniper Networks Junos OS NETISR network queue functionality. A crafted IPv4 ECMP unilist packet sequence can overload the routing protocol daemon (rpd) CPU to 100%, while FPCs continue forwarding, causing a sustained DoS. Affected Junos OS versions include 17.3R3-S9 throug...

CVE-2018-0001

CVE-2018-0001 affects Junos OS via the J-Web interface: a use-after-free defect in older PHP handling could allow an unauthenticated remote code execution by crafting data sent to specific PHP URLs. Affected Junos releases include 12.1X46 (before 12.1X46-D67), 12.3 (before 12.3R12-S5), 12.3X48 (b...

CVE-2021-0221

CVE-2021-0221 affects Juniper Networks Junos OS on QFX Series. A traffic loop can occur when an IRB with VGA is configured in EVPN/VXLAN, leading to DoS in packet processing due to abnormal interface traffic escalation. Public details specify affected Junos OS versions across multiple releases an...

CVE-2021-0223

CVE-2021-0223 concerns a local privilege escalation in Juniper Networks Junos OS via telnetd.real, a setuid/root-owned binary. A locally authenticated shell user can escalate to root, with telnetd.real running with root privileges. Affected Junos OS versions include all prior to 15.1R7-S9; 17.3 p...

CVE-2023-0026

The CVE-2023-0026 issue is a DoS in Juniper Networks Junos OS and Junos OS Evolved caused by improper input validation in the Routing Protocol Daemon (rpd). A remote, unauthenticated attacker can tear down a BGP session by sending an established-session BGP update containing a specific optional t...

CVE-2021-0218

CVE-2021-0218 affects Juniper Networks Junos OS license-check daemon. The vulnerability is a command injection that may allow a locally authenticated attacker with low privileges to run commands as root via the CLI command 'request system license update'. Affected Junos OS versions include 17.3 b...

CVE-2022-22178

CVE-2022-22178 affects Juniper Networks Junos OS on MX Series and SRX Series with the flowd daemon. A stack-based buffer overflow in flowd can be triggered by a specific SIP INVITE when SIP ALG is enabled, causing the flowd process to crash and a sustained DoS, rebooting the PIC and dropping trav...

CVE-2022-22185

The CVE-2022-22185 issue affects Juniper Networks Junos OS on SRX Series devices and is triggered by a crafted fragmented packet that crashes the flowd daemon, leading to a sustained DoS. It applies only when the preserve-incoming-fragment-size feature is enabled and impacts multiple Annual/Relea...

CVE-2022-22186

CVE-2022-22186 describes an Improper Initialization vulnerability in Juniper Networks Junos OS on the EX4650 series. Affected are EX4650 devices with Junos OS versions prior to 19.1R3-S8; 19.2 before 19.2R3-S5; 19.3 before 19.3R3-S5; 19.4 before 19.4R3-S7; 20.1 before 20.1R3-S3; 20.2 before 20.2R...

CVE-2024-21615

CVE-2024-21615 concerns Juniper Networks Junos OS and Junos OS Evolved. The root cause is an Incorrect Default Privileges condition that, when NETCONF traceoptions are configured, can allow a local, low-privileged user to access confidential information after a super-user performs certain NETCONF...

CVE-2024-30380

CVE-2024-30380 affects Junos OS and Junos OS Evolved. An adjacent, unauthenticated attacker can trigger a DoS by sending a specific TLV that crashes the l2cpd process, reinitializing STP/RSTP/MSTP/VSTP, MVRP and ERP. Affected versions are: Junos OS: before 20.4R3-S9; 21.2 before 21.2R3-S7; 21.3 b...

CVE-2022-22241

CVE-2022-22241 (Junos OS J-Web): An improper input validation issue in the J-Web component allows an unauthenticated attacker to deserialize crafted content and gain unauthorized access or execute commands. Affected Junos OS versions include all pre-release/builds before 19.1R3-S9, plus earlier 1...

CVE-2024-30405

CVE-2024-30405 is an input but not a generic vulnerability; the connected docs confirm an issue in Juniper Networks Junos OS SRX 5000 Series with SPC2 line cards when ALGs are enabled. The root cause is an incorrect calculation of the buffer size in the ALG module, which lets an attacker send spe...

CVE-2019-0074

The CVE-2019-0074 issue is a path traversal vulnerability in Juniper Junos OS affecting NFX150, QFX10K, EX9200, MX, and PTX series with NG-RE (vmhost). A local authenticated attacker can read sensitive system files via traversal in NG-RE paths. Affected are multiple firmware tracks: 15.1F before ...

CVE-2021-0277

Summary (CVE-2021-0277): An out-of-bounds read in the Layer 2 Control Protocol Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved can cause DoS and may lead to remote code execution when processing crafted LLDP frames. Affected: Junos OS versions prior to listed fixed releases (e.g....

CVE-2022-22182

CVE-2022-22182 – Junos OS J-Web XSS : A cross-site scripting vulnerability in Juniper Networks Junos OS J-Web allows a crafted URL to execute commands with the target’s privileges, up to administrator. Affected Junos OS versions include 12.3 before 12.3R12-S19; 15.1 before 15.1R7-S10; 18.3 before...

CVE-2025-21602

CVE-2025-21602 affects Juniper Networks Junos OS and Junos OS Evolved. The issue is an improper handling of exceptional conditions in the routing protocol daemon (rpd), allowing an unauthenticated adjacent attacker to send a specific BGP update packet that causes rpd to crash and restart, resulti...

CVE-2022-22196

CVE-2022-22196 affects Juniper Junos OS and Junos OS Evolved, in Routing Protocol Daemon (rpd). An adjacent, unauthenticated attacker with an ISIS adjacency can cause DoS by sending a malformed ISIS TLV, causing rpd CPU to spike to 100% and disrupt routing updates. Affected versions are: Junos OS...

CVE-2023-22403

CVE-2023-22403 affects Juniper Networks Junos OS on QFX10K Series. The issue is an Allocation of Resources Without Limits or Throttling in the Packet Forwarding Engine (PFE) that allows a network-based, unauthenticated attacker to trigger a Denial of Service (DoS). In MC-LAG topologies using ICCP...

CVE-2024-30410

CVE-2024-30410 affects Juniper Networks Junos OS on EX4300 Series. Root cause: an incorrect behavior order in the routing engine causes traffic intended for the device to reach the routing engine (RE) instead of being discarded when a drop/discard term is configured on the loopback (lo0) interfac...

CVE-2025-21598

CVE-2025-21598 is an out-of-bounds read vulnerability in Junos OS and Junos OS Evolved -rpd (routing protocol daemon). An unauthenticated, network-based attacker can send malformed BGP packets to a device with BGP trace options enabled, crashing rpd. Affected ranges include multiple Junos OS and ...

CVE-2019-0059

CVE-2019-0059 describes a memory leak in Junos OS routing protocol process (rdp) that can cause a Denial of Service when specific BGP state commands are received from a peered host. Affected are Junos OS 18.1 versions prior to 18.1R2-S4 and 18.1R3-S1; and 18.1X75 all versions. Versions before 18....

CVE-2021-31368

CVE-2021-31368 (Juniper JUNOS OS) affects EX2300, EX3400, and ACX710 devices. An unauthenticated network attacker can cause 100% CPU load and a DoS by flooding the out-of-band management port, leading to the device becoming unresponsive; system recovery occurs after the flood stops. The vulnerabi...

CVE-2022-22156

CVE-2022-22156 affects Juniper Networks Junos OS. The issue is an improper certificate validation when fetching system scripts via HTTPS, enabling potential Man-in-the-Middle attacks that could compromise integrity and confidentiality. Affected products include Junos OS across multiple released v...

CVE-2023-44186

CVE-2023-44186 concerns Juniper Networks Junos OS and Junos OS Evolved. The issue is an Improper Handling of Exceptional Conditions in AS PATH processing that allows a BGP update with a very long AS PATH of 4-byte ASes to trigger a Denial of Service when NSR is enabled and advertising to a non-4-...

CVE-2024-21620

Summary: CVE-2024-21620 is a cross-site scripting flaw in Juniper Networks Junos OS J-Web (SRX Series and EX Series). An improper neutralization of input during web page generation allows an attacker to craft a URL that, when visited by a user, can execute commands with the target’s permissions (...

CVE-2025-30647

CVE-2025-30647 affects Junos OS on Juniper MX Series. A memory leak in the packet forwarding engine (PFE) during subscriber management (login/logout) can progressively exhaust memory, enabling an unauthenticated adjacent attacker to cause a Denial-of-Service. Affected versions are: before 21.2R3-...

CVE-2024-39549

CVE-2024-39549 affects Junos OS and Junos OS Evolved. A crafted BGP Path attribute update can trigger a Missing Release of Memory after Effective Lifetime in the routing process daemon (rpd), causing memory to be allocated but not freed in all paths and leading to a DoS. Impact is memory exhausti...

CVE-2025-30649

CVE-2025-30649 concerns a Junos OS Improper Input Validation in the syslog stream TCP transport on MX240/MX480/MX960 with MX-SPC3. An unauthenticated network attacker can send specific spoofed packets to cause a CPU Denial of Service on MX-SPC3 SPUs, with continued receipt sustaining the DoS. Aff...

CVE-2024-30398

CVE-2024-30398 – Juniper Junos OS SRX4600 PFE DoS . An improper restriction of operations within the bounds of a memory buffer in the Packet Forwarding Engine (PFE) allows an unauthenticated, network-based attacker to cause a DoS when processing a high amount of specific traffic on SRX4600 device...