CVE-2026-21906

An Improper Handling of Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker sending a specific ICMP packet through a GRE tunnel to cause the PFE to crash and restart. When PowerMode...

CVE-2026-0203

An Improper Handling of Exceptional Conditions vulnerability in packet processing of Juniper Networks Junos OS allows an unauthenticated, network-adjacent attacker sending a specifically malformed ICMP packet to cause an FPC to crash and restart, resulting in a Denial of Service DoS. When an ICMP...

CVE-2026-0203

An Improper Handling of Exceptional Conditions vulnerability in packet processing of Juniper Networks Junos OS allows an unauthenticated, network-adjacent attacker sending a specifically malformed ICMP packet to cause an FPC to crash and restart, resulting in a Denial of Service DoS. When an ICMP...

CVE-2026-21906 Junos OS: SRX Series: With GRE performance acceleration enabled, receipt of a specific ICMP packet causes the PFE to crash

An Improper Handling of Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker sending a specific ICMP packet through a GRE tunnel to cause the PFE to crash and restart. When PowerMode...

CVE-2026-21906 Junos OS: SRX Series: With GRE performance acceleration enabled, receipt of a specific ICMP packet causes the PFE to crash

An Improper Handling of Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker sending a specific ICMP packet through a GRE tunnel to cause the PFE to crash and restart. When PowerMode...

CVE-2026-21906

An Improper Handling of Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker sending a specific ICMP packet through a GRE tunnel to cause the PFE to crash and restart. When PowerMode...

CVE-2026-0203 Junos OS: Receipt of a specifically malformed ICMP packet causes an FPC restart

An Improper Handling of Exceptional Conditions vulnerability in packet processing of Juniper Networks Junos OS allows an unauthenticated, network-adjacent attacker sending a specifically malformed ICMP packet to cause an FPC to crash and restart, resulting in a Denial of Service DoS. When an ICMP...

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...

PT-2026-3120

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS on SRX Series versions prior to 21.4R3-S12 Juniper Networks Junos OS on SRX Series versions 22.4 before 22.4R3-S8 Juniper Networks Junos OS on SRX Series versions 23.2 before 23.2R2-S5 Juniper Networks Junos OS on SRX...

PT-2026-3107

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS versions prior to 21.2R3-S9 Juniper Networks Junos OS versions 21.4 before 21.4R3-S10 Juniper Networks Junos OS versions 22.2 before 22.2R3-S7 Juniper Networks Junos OS versions 22.3 before 22.3R3-S4 Juniper Networks...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003079)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003079 advisory. The pingunhash function in net/ipv4/ping.c in the Linux kernel through 4.10.8 is too late in obtaining a certain lock and consequently cannot ensure that disconnect...

CVE-2026-0203: Improper Handling of Exceptional Conditions

An Improper Handling of Exceptional Conditions vulnerability in packet processing of Juniper Networks Junos OS allows an unauthenticated, network-adjacent attacker sending a specifically malformed ICMP packet to cause an FPC to crash and restart, resulting in a Denial of Service DoS. When an ICMP...

Juniper Networks Junos OS security vulnerabilities

Juniper Networks Junos OS is a network operating system specifically designed for hardware devices of the company Juniper Networks. This operating system provides secure programming interfaces and the Junos SDK. Vulnerabilities exist in versions prior to Junos OS 21.2R3-S9, versions 21.4 to...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002037)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002037 advisory. Race condition in the inetfragintern function in net/ipv4/inetfragment.c in the Linux kernel through 3.13.6 allows remote attackers to cause a denial of service...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002320)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002320 advisory. The pingunhash function in net/ipv4/ping.c in the Linux kernel before 4.0.3 does not initialize a certain list data structure during an unhash operation, which allow...

CVE-2026-21906: Improper Handling of Exceptional Conditions

An Improper Handling of Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on SRX Series allows an unauthenticated network-based attacker sending a specific ICMP packet through a GRE tunnel to cause the PFE to crash and restart. When PowerMode...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002266)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002266 advisory. Race condition in the inetfragintern function in net/ipv4/inetfragment.c in the Linux kernel through 3.13.6 allows remote attackers to cause a denial of service...

CVE-2025-68813: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ipvs: fix ipv4 null-ptr-deref in route error path The IPv4 code path in ipvsgetoutrt calls dstlinkfailure without ensuring skb-dev is set, leading to a NULL pointer dereference in fibcomputespecdst when ipv4linkfailure attempts t...

CVE-2023-49062

Katran could disclose non-initialized kernel memory as part of an IP header. The issue was present for IPv4 encapsulation and ICMP v4 Too Big packet generation. After a bpfxdpadjusthead call, Katran code didn’t initialize the Identification field for the IPv4 header, resulting in writing content ...

CVE-2021-33011

All versions of the afffected TOYOPUC-PC10 Series,TOYOPUC-Plus Series,TOYOPUC-PC3J/PC2J Series, TOYOPUC-Nano Series products may not be able to properly process an ICMP flood, which may allow an attacker to deny Ethernet communications between affected devices...