Juniper Networks vulnerabilities
We track 311 vulnerabilities in Juniper Networks products across 32 products. 306 are rated high or critical, and 9 have been exploited in real attacks. The most recent was published on October 28, 2026.
Latest Juniper Networks vulnerabilities
- 8.8 High severity
Junos OS Evolved: Improper Neutralization of Special Elements used in an OS Command
An OS Command Injection vulnerability in the bootzd zero-touch provisioning daemon of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated attacker on the management LAN to execute commands as root via a crafted gRPC response.
- 7.5 High severity
Junos OS: NULL Pointer Dereference
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured eBGP peer to cause a persistent routing-daemon denial of service via a specific BGP packet when ephemeral config
- 7.5 High severity
Junos OS: NULL Pointer Dereference
A NULL Pointer Dereference vulnerability in the pkid component of Juniper Networks Junos OS allows an unauthenticated remote attacker to cause a denial of service via a malformed packet received during CMP enrollment or automatic certificate re-enrollment.
- 8.8 High severity
Junos OS Evolved: Improper Neutralization of Special Elements used in an OS Command
An OS Command Injection vulnerability in the bootzd zero-touch provisioning daemon of Juniper Networks Junos OS Evolved allows an unauthenticated attacker on the management LAN to execute commands as root via crafted DHCP response.
- 8.2 High severity
Junos OS Evolved: Use of Externally-Controlled Format String
A Use of Externally-Controlled Format String vulnerability in the jti-dialoutd of Juniper Networks Junos OS Evolved allows an authenticated network attacker to cause persistent telemetry dial-out denial of service via a crafted analytics sensor resource submit
- 8.8 High severity
Junos OS Evolved: Use of Externally-Controlled Format String
An Use of Externally-Controlled Format String vulnerability in the gRPC daemon of Juniper Networks Junos OS Evolved allows an authenticated network attacker to cause telemetry-service disruption, information disclosure, or potential root-level code execution v
- 7.5 High severity
Junos OS: Improper Initialization
An Improper Initialization vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote BGP peer to cause an rpd crash via an LLGR-stale route update readvertised to a configured non-LLGR peer group.
- 9.8 Critical severity
Junos OS: Improper Authentication
An Improper Authentication vulnerability in the J-Web web management component of Juniper Networks Junos OS allows an unauthenticated remote attacker to execute arbitrary Junos commands with root privileges via the exposed J-Web web interface.
- 8.1 High severity
Junos OS: Stack-based Buffer Overflow
A Stack-based Buffer Overflow vulnerability in the UTM Anti-Spam SBL of Juniper Networks Junos OS on SRX series allows an unauthenticated remote attacker to cause arbitrary code execution or a denial of service via a injected malformed DNS packet when Anti-Spa
- 7.5 High severity
Junos OS: Improper Validation of Consistency within Input
An Improper Validation of Consistency within Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-adjacent configured BGP peer to cause a denial of service by sending a specifically malform
- 9.8 Critical severity
Junos OS: Heap-based Buffer Overflow
A Heap-based Buffer Overflow vulnerability in the SVR component of Juniper Networks Junos OS on SRX Series allows an unauthenticated network attacker to cause a denial of service and potentially compromise confidentiality and integrity via malformed IPv4 packe
- 7.5 High severity
Junos OS: NULL Pointer Dereference
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote unauthenticated BGP peer to cause a denial of service via a specific BGP FlowSpec update received by an affected BGP
- 7.5 High severity
Junos OS: Integer Overflow or Wraparound
An Integer Overflow or Wraparound vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows a remote attacker with an established EVPN BGP peering relationship to cause a denial of service via EVPN BGP route processing. The issu
- 7.5 High severity
Junos OS: Integer Overflow or Wraparound
An Integer Overflow or Wraparound vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to cause a denial of service via specially crafted EVPN route updates from an accepted EVPN BGP peer.
- 7.5 High severity
An Improper Input Validation vulnerability in the routing protocol daemon (rpd) of Juniper…
An Improper Input Validation 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 via a crafted BGP EVPN update message.
- 7.5 High severity
Junos OS: Improper Handling of Length Parameter Inconsistency
An Improper Handling of Length Parameter Inconsistency vulnerability in the routing protocol daemon (rpd) process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a denial of service via a malformed EV
- 7.5 High severity
Junos OS: NULL Pointer Dereference
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP neighbor to cause a denial of service via a BGP route update when specific routing-policy resolution-map and
- 7.5 High severity
Junos OS: NULL Pointer Dereference
A NULL Pointer Dereference vulnerability in the rpd routing daemon of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated configured BGP peer to cause a denial of service via a BGP UPDATE when ISO-VPN and egress-protection configuration is
- 7.5 High severity
Junos OS: NULL Pointer Dereference
A NULL Pointer Dereference vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a configured peer sending a BGP UPDATE to cause a denial of service when an import policy with `then source-based-forwarding
- 7.8 High severity
Junos OS: Heap-based Buffer Overflow
A Heap-based Buffer Overflow vulnerability in eventd of Juniper Networks Junos OS and Junos OS Evolved on all platforms allows an unprivileged local attacker to cause a denial of service (DoS) or achieve privilege escalation to root via crafted IPC event messa
- 7.3 High severity
Junos OS Evolved: Improper Restriction of Communication Channel to Intended Endpoints
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause license exhaustion. Due to an incorrect initialization, a process which should
- 7.5 High severity
Junos OS: Improper Validation of Syntactic Correctness of Input
An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks Junos OS on MX Series with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).If the SIP ALG is e
- 7.5 High severity
Junos OS: Improper Validation of Specified Quantity in Input
An Improper Validation of Specified Quantity in Input vulnerability in the TCP proxy plugin of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial of Service (DoS). When
- 7.4 High severity
An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved…
An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sending a specific genuine BGP packet in an already established BGP session to reset only that session causing a Denial o
- 7.8 High severity
Junos OS: Execution with Unnecessary Privileges
An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system. When a configuration that allows
- 7.5 High severity
Junos OS: Improper Check for Unusual or Exceptional Conditions
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an attacker sending a specific, malformed ICMPv6 packet to cause the srxpfe process to crash and restart. Continu
- 7.8 High severity
Junos OS Evolved: Missing Authentication for Critical Functionality
A Missing Authentication for Critical Function vulnerability in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved on PTX Series allows a local, authenticated attacker with low privileges to gain direct access to FPCs installed in the d
- 8.8 High severity
Junos OS: Missing Authorization
A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on MX Series allows a local, authenticated user with low privileges to execute specific commands which will lead to a complete compromise of managed devices. Any user logged in, with
- 9.8 Critical severity
JSI LWC: Use of Default Password
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
- 7.5 High severity
Junos OS: Improper Validation of Syntactic Correctness of Input
An Improper Validation of Syntactic Correctness of Input vulnerability in the IPsec library used by kmd and iked of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (D
- 8.1 High severity
CTP OS: Weak Password Requirements
A Weak Password Requirements vulnerability in the password management function of Juniper Networks CTP OS might allow an unauthenticated, network-based attacker to exploit weak passwords of local accounts and potentially take full control of the device. The pa
- 7.3 High severity
Junos OS: UNIX Symbolic Link (Symlink) Following
A UNIX Symbolic Link (Symlink) Following vulnerability in the CLI of Juniper Networks Junos OS allows a local, authenticated attacker with low privileges to escalate their privileges to root which will lead to a complete compromise of the system. When after a
- 8.1 High severity
Apstra: Key Exchange without Entity Authentication
A Key Exchange without Entity Authentication vulnerability in the SSH implementation of Juniper Networks Apstra allows a unauthenticated, MITM attacker to impersonate managed devices. Due to insufficient SSH host key validation an attacker can perform a machin
- 9.8 Critical severity
Junos OS Evolved: Incorrect Permission Assignment for Critical Resource
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 de
- 9.8 Critical severity
Session Smart Router: Authentication Bypass Using an Alternate Path or Channel
An Authentication Bypass Using an Alternate Path or Channel vulnerability in Juniper Networks Session Smart Router may allows a network-based attacker to bypass authentication and take administrative control of the device. This issue affects Session Smart Rout
- 7.5 High severity
Junos OS: Unchecked Return Value
An Unchecked Return Value vulnerability in the DNS module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). If an SRX Series device configured for DNS processing, receives a specifi
- 7.5 High severity
Junos OS: Double Free
A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX and MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). On all SRX and MX Series platforms, when during TCP sessio
- 7.5 High severity
Junos OS: Improper Validation of Syntactic Correctness of Input
An Improper Validation of Syntactic Correctness of Input vulnerability in the Web-Filtering module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). If an SRX device configured for
- 7.5 High severity
Junos OS: Improper Locking
An Improper Locking vulnerability in the GTP plugin of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (Dos). If an SRX Series device receives a specifically malformed GPRS Tunnelling Proto
- 7.5 High severity
Junos OS: Improper Initialization
An Incorrect Initialization of Resource vulnerability in the Internal Device Manager (IDM) of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). On EX4000 models with 48 ports (EX400