Juniper Networks Junos Os vulnerabilities

CVE-2024-39558 [MEDIUM] CWE-252 CVE-2024-39558: An Unchecked Return Value vulnerability in the Routing Protocol Daemon (rpd) on Juniper Networks Jun An Unchecked Return Value vulnerability in the Routing Protocol Daemon (rpd) on Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows a logically adjacent, unauthenticated attacker sending a specific PIM packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS), when PIM is configured with Multicast-only Fast

CVE-2025-30653 [MEDIUM] CWE-825 CVE-2025-30653: An Expired Pointer Dereference vulnerability in Routing Protocol Daemon (rpd) of Juniper Networks Ju An Expired Pointer Dereference vulnerability in Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service (DoS).On all Junos OS and Junos OS Evolved platforms, when an MPLS Label-Switched Path (LSP) is configured with node-link-protection and transport-clas

CVE-2025-30646 [MEDIUM] CWE-195 CVE-2025-30646: A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon (l2cpd) o A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon (l2cpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated adjacent attacker sending a specifically malformed LLDP TLV to cause the l2cpd process to crash and restart, causing a Denial of Service (DoS). Continued recei

CVE-2025-21602 [MEDIUM] CWE-755 CVE-2025-21602: An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a specific BGP update packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continuous receipt and processing of this pack

CVE-2026-33780 [MEDIUM] CWE-401 CVE-2026-33780: A Missing Release of Memory after Effective Lifetime vulnerability in the Layer 2 Address Learning D A Missing Release of Memory after Effective Lifetime vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a memory leak ultimately leading to a Denial of Service (DoS). In an EVPN-MPLS scenario, routes learned from remote multi-homed Pro

CVE-2022-22182 [MEDIUM] CWE-79 CVE-2022-22182: A Cross-site Scripting (XSS) vulnerability in Juniper Networks Junos OS J-Web allows an attacker to A Cross-site Scripting (XSS) vulnerability in Juniper Networks Junos OS J-Web allows an attacker to construct a URL that when visited by another user enables the attacker to execute commands with the target's permissions, including an administrator. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S19; 15.1 versions prior t

CVE-2018-0060 [MEDIUM] CWE-20 CVE-2018-0060: An improper input validation weakness in the device control daemon process (dcd) of Juniper Networks An improper input validation weakness in the device control daemon process (dcd) of Juniper Networks Junos OS allows an attacker to cause a Denial of Service to the dcd process and interfaces and connected clients when the Junos device is requesting an IP address for itself. Junos devices are not vulnerable to this issue when not configured to use DHCP

CVE-2020-1629 [MEDIUM] CWE-366 CVE-2020-1629: A race condition vulnerability on Juniper Network Junos OS devices may cause the routing protocol da A race condition vulnerability on Juniper Network Junos OS devices may cause the routing protocol daemon (RPD) process to crash and restart while processing a BGP NOTIFICATION message. This issue affects Juniper Networks Junos OS: 16.1 versions prior to 16.1R7-S6; 16.2 versions prior to 16.2R2-S11; 17.1 versions prior to 17.1R2-S11, 17.1R3-S1; 17.2 ve

CVE-2021-0229 [MEDIUM] CWE-400 CVE-2021-0229: An uncontrolled resource consumption vulnerability in Message Queue Telemetry Transport (MQTT) serve An uncontrolled resource consumption vulnerability in Message Queue Telemetry Transport (MQTT) server of Juniper Networks Junos OS allows an attacker to cause MQTT server to crash and restart leading to a Denial of Service (DoS) by sending a stream of specific packets. A Juniper Extension Toolkit (JET) application designed with a listening port uses t

CVE-2017-10604 [MEDIUM] CWE-307 CVE-2017-10604: When the device is configured to perform account lockout with a defined period of time, any unauthen When the device is configured to perform account lockout with a defined period of time, any unauthenticated user attempting to log in as root with an incorrect password can trigger a lockout of the root account. When an SRX Series device is in cluster mode, and a cluster sync or failover operation occurs, then there will be errors associated with sy

CVE-2022-22204 [MEDIUM] CWE-401 CVE-2022-22204: An Improper Release of Memory Before Removing Last Reference vulnerability in the Session Initiation An Improper Release of Memory Before Removing Last Reference vulnerability in the Session Initiation Protocol (SIP) Application Layer Gateway (ALG) of Juniper Networks Junos OS allows unauthenticated network-based attacker to cause a partial Denial of Service (DoS). On all MX and SRX platforms, if the SIP ALG is enabled, receipt of a specific SIP pa

CVE-2024-21596 [MEDIUM] CWE-122 CVE-2024-21596: A Heap-based Buffer Overflow vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks A Heap-based Buffer Overflow vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS). If an attacker sends a specific BGP UPDATE message to the device, this will cause a memory overwrite and therefore an RPD crash and res

CVE-2024-30409 [MEDIUM] CWE-754 CVE-2024-30409: An Improper Check for Unusual or Exceptional Conditions vulnerability in telemetry processing of Jun An Improper Check for Unusual or Exceptional Conditions vulnerability in telemetry processing of Juniper Networks Junos OS and Junos OS Evolved allows a network-based authenticated attacker to cause the forwarding information base telemetry daemon (fibtd) to crash, leading to a limited Denial of Service. This issue affects Juniper Networks Junos O

CVE-2023-44188 [MEDIUM] CWE-367 CVE-2023-44188: A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in telemetry processing of Junipe A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in telemetry processing of Juniper Networks Junos OS allows a network-based authenticated attacker to flood the system with multiple telemetry requests, causing the Junos Kernel Debugging Streaming Daemon (jkdsd) process to crash, leading to a Denial of Service (DoS). Continued receipt

CVE-2024-30391 [MEDIUM] CWE-306 CVE-2024-30391: A Missing Authentication for Critical Function vulnerability in the Packet Forwarding Engine (pfe) o A Missing Authentication for Critical Function vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated network-based attacker to cause limited impact to the integrity or availability of the device. If a device is configured with IPsec authentication algorithm

CVE-2022-22203 [MEDIUM] CWE-697 CVE-2022-22203: An Incorrect Comparison vulnerability in PFE of Juniper Networks Junos OS allows an adjacent unauthe An Incorrect Comparison vulnerability in PFE of Juniper Networks Junos OS allows an adjacent unauthenticated attacker to cause a Denial of Service (DoS). On QFX5000 Series, and EX4600 and EX4650 platforms, the fxpc process will crash followed by the FPC reboot upon receipt of a specific hostbound packet. Continued receipt of these specific packets w

CVE-2022-22154 [MEDIUM] CWE-642 CVE-2022-22154: In a Junos Fusion scenario an External Control of Critical State Data vulnerability in the Satellite In a Junos Fusion scenario an External Control of Critical State Data vulnerability in the Satellite Device (SD) control state machine of Juniper Networks Junos OS allows an attacker who is able to make physical changes to the cabling of the device to cause a denial of service (DoS). An SD can get rebooted and subsequently controlled by an Aggregati

CVE-2021-0215 [MEDIUM] CWE-400 CVE-2021-0215: On Juniper Networks Junos EX series, QFX Series, MX Series and SRX branch series devices, a memory l On Juniper Networks Junos EX series, QFX Series, MX Series and SRX branch series devices, a memory leak occurs every time the 802.1X authenticator port interface flaps which can lead to other processes, such as the pfex process, responsible for packet forwarding, to crash and restart. An administrator can use the following CLI command to monitor the s

CVE-2020-1668 [MEDIUM] CWE-400 CVE-2020-1668: On Juniper Networks EX2300 Series, receipt of a stream of specific multicast packets by the layer2 i On Juniper Networks EX2300 Series, receipt of a stream of specific multicast packets by the layer2 interface can cause high CPU load, which could lead to traffic interruption. This issue occurs when multicast packets are received by the layer 2 interface. To check if the device has high CPU load due to this issue, the administrator can issue the follo

CVE-2021-0221 [MEDIUM] CWE-703 CVE-2021-0221: In an EVPN/VXLAN scenario, if an IRB interface with a virtual gateway address (VGA) is configured on In an EVPN/VXLAN scenario, if an IRB interface with a virtual gateway address (VGA) is configured on a PE, a traffic loop may occur upon receipt of specific IP multicast traffic. The traffic loop will cause interface traffic to increase abnormally, ultimately leading to a Denial of Service (DoS) in packet processing. The following command could be use