CVE-2025-30644 Junos OS: EX2300, EX3400, EX4000 Series, QFX5k Series: Receipt of a specific DHCP packet causes FPC crash when DHCP Option 82 is enabled

A Heap-based Buffer Overflow vulnerability in the flexible PIC concentrator FPC of Juniper Networks Junos OS on EX2300, EX3400, EX4100, EX4300, EX4300MP, EX4400, EX4600, EX4650-48Y, and QFX5k Series allows an attacker to send a specific DHCP packet to the device, leading to an FPC crash and...

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-2025-30644 Junos OS: EX2300, EX3400, EX4000 Series, QFX5k Series: Receipt of a specific DHCP packet causes FPC crash when DHCP Option 82 is enabled

A Heap-based Buffer Overflow vulnerability in the flexible PIC concentrator FPC of Juniper Networks Junos OS on EX2300, EX3400, EX4100, EX4300, EX4300MP, EX4400, EX4600, EX4650-48Y, and QFX5k Series allows an attacker to send a specific DHCP packet to the device, leading to an FPC crash and...

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-2025-21601 Junos OS: SRX and EX Series, MX240, MX480, MX960, QFX5120 Series: When web management is enabled for specific services an attacker may cause a CPU spike by sending genuine packets to the device

An Improper Following of Specification by Caller vulnerability in web management J-Web, Captive Portal, 802.1X, Juniper Secure Connect JSC of Juniper Networks Junos OS on SRX Series, EX Series, MX240, MX480, MX960, QFX5120 Series, allows an unauthenticated, network-based attacker, sending genuine...

CVE-2025-21601 Junos OS: SRX and EX Series, MX240, MX480, MX960, QFX5120 Series: When web management is enabled for specific services an attacker may cause a CPU spike by sending genuine packets to the device

An Improper Following of Specification by Caller vulnerability in web management J-Web, Captive Portal, 802.1X, Juniper Secure Connect JSC of Juniper Networks Junos OS on SRX Series, EX Series, MX240, MX480, MX960, QFX5120 Series, allows an unauthenticated, network-based attacker, sending genuine...

CVE-2025-21597 Junos OS and Junos OS Evolved: When BGP rib-sharding and update-threading are configured and a peer flaps, an rpd core is observed

An Improper Check for Unusual or Exceptional Conditions vulnerability in routing protocol daemon rpd of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, logically adjacent BGP peer to cause Denial of Service DoS. On all Junos OS and Junos OS Evolved platforms, when BGP...

CVE-2025-21597 Junos OS and Junos OS Evolved: When BGP rib-sharding and update-threading are configured and a peer flaps, an rpd core is observed

An Improper Check for Unusual or Exceptional Conditions vulnerability in routing protocol daemon rpd of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, logically adjacent BGP peer to cause Denial of Service DoS. On all Junos OS and Junos OS Evolved platforms, when BGP...

CVE-2025-21597

CVE-2025-21597 covers an issue in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved. When BGP rib-sharding and update-threading are configured, a remote, unauthenticated, logically adjacent BGP peer can cause rpd to crash and restart via a specific timing of peer...

CVE-2025-21595 Junos OS and Junos OS Evolved: In an EVPN-VXLAN scenario specific ARP or NDP packets cause FPC to crash

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause an FPC to crash, leading to Denial of Service DoS. On all Junos OS and Junos OS Evolved...

CVE-2025-21595

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS and Junos OS Evolved can cause an FPC crash and DoS. In EVPN-VXLAN, receiving specific ARP (IPv4) or NDP (IPv6) packets triggers kernel heap memory leaks and event...

CVE-2025-21595 Junos OS and Junos OS Evolved: In an EVPN-VXLAN scenario specific ARP or NDP packets cause FPC to crash

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause an FPC to crash, leading to Denial of Service DoS. On all Junos OS and Junos OS Evolved...

CVE-2025-21594 Junos OS: MX Series: In DS-lite and NAT scenario receipt of crafted IPv6 traffic causes port block

An Improper Check for Unusual or Exceptional Conditions vulnerability in the pfe packet forwarding engine of Juniper Networks Junos OS on MX Series causes a port within a pool to be blocked leading to Denial of Service DoS. In a DS-Lite Dual-Stack Lite and NAT Network Address Translation scenario...

CVE-2025-21594 Junos OS: MX Series: In DS-lite and NAT scenario receipt of crafted IPv6 traffic causes port block

An Improper Check for Unusual or Exceptional Conditions vulnerability in the pfe packet forwarding engine of Juniper Networks Junos OS on MX Series causes a port within a pool to be blocked leading to Denial of Service DoS. In a DS-Lite Dual-Stack Lite and NAT Network Address Translation scenario...

CVE-2025-21594

Summary (CVE-2025-21594) : Affects Juniper Networks Junos OS on MX Series. The issue is an improper check in the packet forwarding engine (pfe) that can block a port pool when processing crafted IPv6 traffic in a DS-Lite/NAT scenario, causing Denial of Service. In the affected scenarios, ports as...

CVE-2025-21591 Junos OS: An unauthenticated adjacent attacker sending a malformed DHCP packet causes jdhcpd to crash

A Buffer Access with Incorrect Length Value vulnerability in the jdhcpd daemon of Juniper Networks Junos OS, when DHCP snooping is enabled, allows an unauthenticated, adjacent, attacker to send a DHCP packet with a malformed DHCP option to cause jdhcp to crash creating a Denial of Service DoS...

CVE-2025-21591

CVE-2025-21591 describes a buffer length error in the jdhcpd daemon of Juniper Junos OS when DHCP snooping is enabled, enabling an unauthenticated adjacent attacker to send malformed DHCP options and crash jdhcpd, causing DoS. Affected ranges are Junos OS 23.1 before 23.2R2-S3, 23.4 before 23.4R2...

CVE-2025-21591 Junos OS: An unauthenticated adjacent attacker sending a malformed DHCP packet causes jdhcpd to crash

A Buffer Access with Incorrect Length Value vulnerability in the jdhcpd daemon of Juniper Networks Junos OS, when DHCP snooping is enabled, allows an unauthenticated, adjacent, attacker to send a DHCP packet with a malformed DHCP option to cause jdhcp to crash creating a Denial of Service DoS...

PT-2025-15859 · Juniper Networks · Junos Evolved +1

Name of the Vulnerable Software and Affected Versions: Junos OS versions prior to 21.2R3-S9 Junos OS versions from 21.4 before 21.4R3-S10 Junos OS versions from 22.2 before 22.2R3-S6 Junos OS versions from 22.4 before 22.4R3-S6 Junos OS versions from 23.2 before 23.2R2-S3 Junos OS versions from...

Juniper Junos OS Vulnerability (JSA96455)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA96455 advisory. - A NULL Pointer Dereference vulnerability in the flow daemon flowd of Juniper Networks Junos OS on SRX Series allows an attacker causing specific, valid control traffic to ...