CVE-2026-33790

Threat summary (CVE-2026-33790): Juniper Junos OS on SRX Series is affected by an improper check in the flowd component during NAT64 translation. Receipt of a specific, malformed ICMPv6 packet to the device may crash and restart the srxpfe process, leading to a sustained DoS. Affected software in...

CVE-2026-57022

CVE-2026-57022 affects Junos OS on MX Series with SPC3, SRX Series (including vSRX). The vulnerability stems from an improper check for unusual or exceptional conditions in the Packet Forwarding Engine (PFE). A unauthenticated, network-based attacker can trigger a PFE crash by a TCP connection to...

CVE-2025-52952

CVE-2025-52952 affects Juniper Networks Junos OS on MX Series with MPC-BUILTIN, MPC1–MPC9. The issue is an out-of-bounds write in the CFM daemon that allows an unauthenticated adjacent attacker to send a malformed packet, triggering an FPC crash and device restart and causing a Denial of Service ...

CVE-2026-0203

CVE-2026-0203 affecting Juniper Networks Junos OS —An Improper Handling of Exceptional Conditions vulnerability in packet processing can be exploited by an unauthenticated, network-adjacent attacker sending a specifically malformed ICMP (IPv4) packet. This causes the Flexible Packet Processor (FP...

CVE-2026-33782

CVE-2026-33782 affects Junos OS on MX Series running DHCP daemon (jdhcpd). In specific DHCPv6 scenarios (DHCPv6 over PPPoE or VLAN with Active lease query or Bulk lease query), every subscriber logout leaks memory, leading to memory exhaustion, jdhcpd crash, and a full service impact until recove...

CVE-2025-52946

CVE-2025-52946 is a Use After Free in Juniper Junos OS and Junos OS Evolved rpd triggered by a BGP update containing a specifically malformed AS PATH, causing the rpd process to crash and restart and resulting in DoS when traceoptions are enabled. Affected: Junos OS and Junos OS Evolved across mu...

CVE-2025-59957

CVE-2025-59957 affects Juniper Networks Junos OS on EX4600 Series and QFX5000 Series switches. Affected versions: all prior to 21.4R3 and 22.2 prior to 22.2R3-S3. The vulnerability is a runtime/Origin Validation Error in an insufficient protected file , allowing an unauthenticated attacker with p...

CVE-2026-21912

CVE-2026-21912 is a TOCTOU race in Juniper Junos OS on MX10k Series affecting LC480/LC2101 line cards. Repeatedly running the CLI command “show system firmware” can cause a line card to crash and restart, with chassisd potentially crashing and generating a core dump after the line card failure. A...

CVE-2025-52984

CVE-2025-52984 – Juniper Junos OS / Junos OS Evolved Root cause: a NULL pointer dereference in the routing protocol daemon (rpd) when a static route points to a reject next hop and a gNMI query is processed for that route, causing rpd to crash and restart and thus impacting device availability. A...

CVE-2025-60007

The CVE-2025-60007 entry describes a NULL pointer dereference in Juniper Networks Junos OS chassisd (chassis daemon) on MX, SRX, and EX Series. A local attacker with low privileges can crash chassisd by issuing a crafted show chassis command, causing the affected components (except the Routing En...

CVE-2026-21920

CVE-2026-21920 affects Juniper Networks Junos OS on SRX Series. An unchecked return value in the DNS module causes the flowd process to crash and restart when processing specially crafted DNS requests, leading to DoS/service interruption. Affected versions include 23.4 before 23.4R2-S5, 24.2 befo...

CVE-2026-21921

Summary (CVE-2026-21921) : A Use After Free in the chassis daemon (chassisd) of Juniper Junos OS and Junos OS Evolved can allow a network-based attacker with low privileges to cause a Denial-of-Service. The issue arises when telemetry collectors repeatedly subscribe/unsubscribe to sensors, causin...

CVE-2026-57030

CVE-2026-57030 describes a race condition in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX Series. The vulnerability occurs during flow timeout handling in stateful traffic processing: a race when setting a flow’s timeout can cause the value to be set to an abnormally hig...

CVE-2025-52949

CVE-2025-52949 describes an Improper Handling of Length Parameter Inconsistency in Juniper’s rpd component of Junos OS and Junos OS Evolved. A logically adjacent BGP peer can send a specifically malformed BGP update in EVPN environments, causing rpd to crash and restart, leading to a Denial of Se...

CVE-2025-59960

CVE-2025-59960 affects Juniper Networks Junos OS and Junos OS Evolved. The vulnerability arises in the DHCP service (jdhcpd) where the default DHCP relay behavior allows Option 82 information from a client in one subnet to reach the DHCP server unmodified, enabling a DHCP client to exhaust addres...

CVE-2025-60011

CVE-2025-60011 describes an improper check for unusual or exceptional conditions in Juniper Junos OS and Junos OS Evolved rpd, enabling an unauthenticated, network-based attacker to cause availability impact on downstream devices. When a device receives a specific optional transitive BGP attribut...

CVE-2026-21919

Summary: CVE-2026-21919 describes an Incorrect Synchronization vulnerability in Juniper mgd (management daemon) on Junos OS and Junos OS Evolved. When NETCONF sessions are rapidly opened and closed, a locking issue can cause mgd processes to hang in a lockf state, eventually hitting the maximum p...

CVE-2026-57023

The CVE concerns Juniper Junos OS on MX Series with SPC3 and SRX Series where a TCP proxy plugin can crash the flowd daemon via a specifically malformed TCP header during a flow session (to support ALGs/Advanced Anti‑Malware/ICAP/UTM). This is caused by improper validation of a specified quantity...

CVE-2025-52948

Summary: CVE-2025-52948 describes an Improper Handling of Exceptional Conditions vulnerability in the Berkeley Packet Filter (BPF) processing in Juniper Networks Junos OS that can cause the FPC and system to crash and restart under rare traffic patterns, especially when packet capture is enabled....

CVE-2025-59962

CVE-2025-59962 affects Juniper Networks Junos OS and Junos OS Evolved with BGP sharding enabled. The issue is an Access of Uninitialized Pointer in the routing protocol daemon (rpd) that can crash and restart rpd when indirect next-hop updates trigger route re-resolution (e.g., an IGP change affe...

CVE-2026-21909

CVE-2026-21909 affects Junos OS and Junos OS Evolved: a Missing Release of Memory after Effective Lifetime vulnerability in rpd allows an unauthenticated adjacent IS-IS neighbor to craft packets that leak memory, eventually crashing rpd and causing DoS. Affected: Junos OS from 23.2 before 23.2R2;...

CVE-2025-52947

CVE-2025-52947 affects Juniper Networks Junos OS on ACX1000/1100/2000/2100/2200/4000/5048/5096, older than 21.2R3-S9. Root cause: improper handling of exceptional conditions in route processing when the L2 circuit’s primary path port IGP goes down while hot-standby is configured, causing FEB0 to ...

CVE-2025-59961

CVE-2025-59961 describes an Incorrect Permission Assignment vulnerability in Juniper’s DHCP daemon (jdhcpd) used by Junos OS and Junos OS Evolved. A local, low-privilege user can write to the Unix socket that manages jdhcpd, enabling administrative control over the DHCP service. Affected products...

CVE-2026-57020

CVE-2026-57020 affects Junos OS on Juniper’s QFX10000 Series. The issue arises in the packet forwarding engine (pfe) where an unauthenticated, adjacent attacker can trigger a DoS by sending IPv6 multicast traffic in an EVPN-VxLAN setup; if these packets reach the spine’s non-IRB interface, they f...

CVE-2025-60010

CVE-2025-60010 affects Juniper Junos OS and Junos OS Evolved. A password-aging flaw in the RADIUS client lets an authenticated, network-based attacker log in without enforcing a required password change, using an expired but correct password. Affected versions include: Junos OS pre-22.4R3-S8, 23....

CVE-2026-21917

CVE-2026-21917 affects Juniper Networks Junos OS on SRX Series with the Web-Filtering (UTM Web-Filtering) module. The issue is an improper validation of syntactic correctness of input in the Web-Filtering component, allowing an unauthenticated, network-based attacker to cause a Denial-of-Service ...

CVE-2026-33776

CVE-2026-33776 affects Juniper Networks Junos OS and Junos OS Evolved. A Missing Authorization flaw in the CLI allows a local, low-privilege user to read sensitive information by executing the command 'show mgd' with specific arguments. Affected Junos OS versions include all before 22.4R3-S8, 23....

CVE-2026-57021

The CVE-2026-57021 entry describes an Out-of-bounds Write vulnerability in the http-gatekeeper (http-gk) component of Juniper Networks Junos OS on SRX Series. A network-based, unauthenticated attacker can trigger the flaw by sending specially formatted requests when remote-access VPN with pre-log...

CVE-2025-52963

CVE-2025-52963 – Junos OS UI access control flaw . A local, low-privileged user with a view permission can issue the risky command to disable an interface, causing a Denial-of-Service. Affected software ranges include: all versions before 21.2R3-S9; 21.4 before 21.4R3-S11; 22.2 before 22.2R3-S7; ...

CVE-2025-59980

Summary of CVE-2025-59980 : Juniper Networks Junos OS FTP server contains an authentication bypass. When the FTP server is enabled and a user named “ftp” or “anonymous” exists, an unauthenticated attacker can log in without a password and gain read/write access to the user’s home directory. Affec...

CVE-2026-21903

CVE-2026-21903 is a stack-based buffer overflow in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS. A network-based attacker with low privileges can trigger a Denial-of-Service by subscribing to telemetry sensors at scale, which causes all FPC connections to drop, an FPC crash, an...

CVE-2026-33786

CVE-2026-33786 affects Juniper Networks Junos OS running on SRX1600, SRX2300, and SRX4300. The issue is an Improper Check for Unusual or Exceptional Conditions in the chassis control daemon (chassisd), allowing a local, low-privilege attacker to cause a complete Denial of Service. When a specific...

CVE-2025-59959

CVE-2025-59959 describes an Untrusted Pointer Dereference in Juniper Networks Junos OS and Junos OS Evolved routing protocol daemon (rpd). A local, authenticated attacker with low privileges can trigger a crash/restart of rpd by running the command: show route detail when at least one output rou...

CVE-2026-33787

The CVE-2026-33787 entry describes an Improper Check for Unusual or Exceptional Conditions in Juniper Networks Junos OS chassisd on SRX1500, SRX4100, SRX4200, and SRX4600. When a specific show chassis CLI command is run, chassisd crashes and restarts, causing a momentary DoS with traffic disrupti...

CVE-2025-59964

This CVE concerns Juniper Networks Junos OS on SRX4700 devices. A Use of Uninitialized Resource vulnerability in the PFE (Packet Forwarding Engine) can be triggered by forwarding-options sampling, allowing an unauthenticated, network-based attacker to cause a DoS. Specifically, when traffic desti...

CVE-2026-33802

Summary: CVE-2026-33802 is a Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series switches (EX2300, EX4000, EX4100, EX4300-MP, EX4400) that allows a locally authenticated attacker with no specific permissions to execute a privileged CLI command and trigger a Do...

CVE-2026-33797

CVE-2026-33797 affects Juniper Networks Junos OS and Junos OS Evolved. An unauthenticated, adjacent attacker can reset only an established BGP session by sending a specific genuine BGP packet, causing DoS on that session. Repeated packets sustain the DoS. Affected are Junos OS 25.2 before 25.2R2 ...