Critical Cisco Nexus 9000 Flaw Lets Unauthenticated Remote Attackers Run Code as Root

Cisco has released patches to address a critical security flaw affecting 10 Silicon One-based Nexus 9000 switches that could allow an unauthenticated, remote attacker to execute code as root, alongside an IOS XR hardening release bundling 7 umbrella CVEs, 2 of which are rated 9.8, with no...

UBUNTU-CVE-2026-80738

In the Linux kernel, the following vulnerability has been resolved: bpf: Check skstate before skprotocol in bpftcpsyncookie bpftcpgensyncookie and bpftcpchecksyncookie accept a socket pointer 'sk' with argument type ARGPTRTOBTFIDSOCKCOMMON. However, they access sk-skprotocol without validating...

erlang: Erlang/OTP: Remote denial of service via signed length overflow in TCP driver

A flaw was found in Erlang/OTP. A remote, unauthenticated attacker can exploit a signed length overflow vulnerability in the inet TCP driver when operating in packet,4 mode. By sending a specially crafted packet, the attacker can cause an incorrect packet length calculation, leading to a buffer...

TCPViewer v1.14.0

TCP Viewer A simple, native packet viewer for Mac. Website · Download · Docs · Releases TCP Viewer captures and reads network packets on macOS. It uses system libpcap for capture and Wireshark libraries for deep packet details. Features Native macOS app, built with AppKit Built on top of Wireshar...

CVE-2026-80738 bpf: Check sk_state before sk_protocol in bpf_tcp_*_syncookie

In the Linux kernel, the following vulnerability has been resolved: bpf: Check skstate before skprotocol in bpftcpsyncookie bpftcpgensyncookie and bpftcpchecksyncookie accept a socket pointer 'sk' with argument type ARGPTRTOBTFIDSOCKCOMMON. However, they access sk-skprotocol without validating...

EUVD-2026-70342

In the Linux kernel, the following vulnerability has been resolved: bpf: Check skstate before skprotocol in bpftcpsyncookie bpftcpgensyncookie and bpftcpchecksyncookie accept a socket pointer 'sk' with argument type ARGPTRTOBTFIDSOCKCOMMON. However, they access sk-skprotocol without validating...

CVE-2026-80738 bpf: Check sk_state before sk_protocol in bpf_tcp_*_syncookie

In the Linux kernel, the following vulnerability has been resolved: bpf: Check skstate before skprotocol in bpftcpsyncookie bpftcpgensyncookie and bpftcpchecksyncookie accept a socket pointer 'sk' with argument type ARGPTRTOBTFIDSOCKCOMMON. However, they access sk-skprotocol without validating...

A Signed Length Overflow in Erlang/OTP's inet TCP Driver Overflows the Receive Buffer Into BEAM VM Memory From an Unauthenticated Peer

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SUSE CVE-2026-74385

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: check return value of nvmettcpsetqueuesock The return value of nvmettcpsetqueuesock is currently ignored in nvmettcptlshandshakedone. If it fails e.g., due to the socket not being in TCPESTABLISHED state, the socket...

CVE-2026-85443: Uncontrolled Resource Consumption

MOOS core-moos through 10.4.0 contains a denial of service vulnerability in MOOSCommServer::ListenLoop where the accept thread performs a blocking receive without timeout during the wire-protocol handshake. An attacker can open a TCP connection to the MOOSDB port and send no data, causing the...

CVE-2026-85455: Out-of-bounds Read

MOOS core-moos through 10.4.0 contains a buffer over-read vulnerability in CMOOSCommPkt where a four-byte packet triggers out-of-bounds memory access during deserialization. Attackers can open a TCP connection to the MOOSDB port and send a crafted short packet to read memory before authentication...

PT-2026-85292

Name of the Vulnerable Software and Affected Versions core-moos versions prior to 10.4.1 Description A denial of service issue exists in the MOOSCommServer::ListenLoop function. The accept thread performs a blocking receive without a timeout during the wire-protocol handshake. An attacker can...

PT-2026-84936

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The bpf tcp gen syncookie and bpf tcp check syncookie functions accept a socket pointer sk with the argument type ARG PTR TO BTF ID SOCK COMMON. The issue occurs because these functions...

PT-2026-90893

In the Linux kernel, the following vulnerability has been resolved: bpf: Check sk state before sk protocol in bpf tcp syncookie bpf tcp gen syncookie and bpf tcp check syncookie accept a socket pointer 'sk' with argument type ARG PTR TO BTF ID SOCK COMMON. However, they access sk-sk protocol...

Unity Linux 20.1070-8ae / 20.1070e Security Update: kernel (UTSA-2026-105426)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-105426 advisory. In the Linux kernel, the following vulnerability has been resolved: ntbnetdev: Use devkfreeskbany in interrupt context TX/RX callback handlers ntbnetdevtxhandler,...

CVE-2026-20212

A vulnerability in the Silicon One integration for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute code with root privileges. This vulnerability exists because TCP ports 43210 and 43211 are accessible in the default Layer 3 L3 virtual routing and...

CVE-2026-20212 Cisco Nexus 3000 and 9000 Series Switches Silicon One Hardware Abstraction Layer Remote Code Execution Vulnerability

A vulnerability in the Silicon One integration for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute code with root privileges. This vulnerability exists because TCP ports 43210 and 43211 are accessible in the default Layer 3 L3 virtual routing and...

CVE-2026-20212

CVE-2026-20212 affects the Silicon One Hardware Abstraction Layer (S1HAL) in Cisco Nexus 9000 Series Switches . The root cause is that TCP ports 43210 and 43211 are accessible in the default Layer 3 VRF, allowing an unauthenticated, remote attacker to send crafted input that executes code with ro...

CVE-2026-20212 Cisco Nexus 3000 and 9000 Series Switches Silicon One Hardware Abstraction Layer Remote Code Execution Vulnerability

A vulnerability in the Silicon One integration for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute code with root privileges. This vulnerability exists because TCP ports 43210 and 43211 are accessible in the default Layer 3 L3 virtual routing and...

Cisco Nexus 9000 Series Switches Silicon One Remote Code Execution Vulnerability

A vulnerability in the Silicon One integration for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute code with root privileges. This vulnerability exists because TCP ports 43210 and 43211 are accessible in the default Layer 3 L3 virtual routing and...