Wireshark security vulnerabilities

Wireshark is a set of network packet analysis tools developed by the Wireshark team. The software’s function is to capture network packets and display detailed data for analysis. Versions of Wireshark from 4.6.0 to 4.6.4, as well as 4.4.0 to 4.4.14, have security vulnerabilities. These...

Wireshark security vulnerabilities

Wireshark is a set of network packet analysis software developed by the Wireshark team. The software’s function is to capture network packets and display detailed data for analysis. Versions of Wireshark from 4.6.0 to 4.6.4, as well as 4.4.0 to 4.4.14, have security vulnerabilities. These...

FreeBSD security vulnerabilities

FreeBSD is a Unix-like operating system developed by the FreeBSD Foundation. FreeBSD has security vulnerabilities; these vulnerabilities stem from incorrect packet validation, which leads to infinite recursion when parsing SCTP block parameters. This can result in stack overflows and crashes...

CVE-2026-33450: Out-of-bounds Read

CVE-2026-33450 is an out of bounds read vulnerability in the Secure Access MacOS client prior to 14.50. Attackers with control of a modified server can send a malformed packet to the client causing a denial of service...

CVE-2026-28532: Integer Overflow or Wraparound

FRRouting before 10.5.3 contains an integer overflow vulnerability in seven OSPF Traffic Engineering and Segment Routing TLV parser functions where a uint16t accumulator variable truncates uint32t values returned by the TLVSIZE macro, causing the loop termination condition to fail while pointer...

CVE-2026-7424

Integer underflow in the DHCPv6 sub-option parser in FreeRTOS-Plus-TCP before V4.4.1 and V4.2.6 allows an adjacent network actor to corrupt the device's IPv6 address assignment, DNS configuration, and lease times, and to cause a denial of service permanent IP task freeze requiring hardware reset ...

CVE-2026-7422

Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of the device's own registered endpoints, because the loopback detection...

CVE-2026-7422 MAC Address Validation Bypass in FreeRTOS-Plus-TCP IPv4 and IPv6 Packet Processing

Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of the device's own registered endpoints, because the loopback detection...

CVE-2026-7422

CVE-2026-7422 affects FreeRTOS-Plus-TCP; insufficient packet validation in IPv4/IPv6 processing (before V4.2.6 and V4.4.1) allows an adjacent attacker to bypass checksum and minimum-size checks by spoofing the Ethernet source MAC to a local endpoint, since loopback-detection skips validation for ...

CVE-2026-7422 MAC Address Validation Bypass in FreeRTOS-Plus-TCP IPv4 and IPv6 Packet Processing

Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of the device's own registered endpoints, because the loopback detection...

ovn: OVN: Information disclosure via crafted DHCPv6 packets

A flaw was found in OVN Open Virtual Network. A remote attacker, by sending crafted DHCPv6 Dynamic Host Configuration Protocol for IPv6 SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the...

ovn: ovn: Heap Over-Read in ICMP Error Response Generation

When generating an ICMP Destination Unreachable or Packet Too Big response, the handler copies a portion of the original packet into the ICMP error body using the IP header's self-declared total length iptotlen for IPv4, ip6plen for IPv6 without validating it against the actual packet buffer size...

ovn: ovn: Heap Over-Read in ICMP Error Response Generation

When generating an ICMP Destination Unreachable or Packet Too Big response, the handler copies a portion of the original packet into the ICMP error body using the IP header's self-declared total length iptotlen for IPv4, ip6plen for IPv6 without validating it against the actual packet buffer size...

CLSA-2026-1777453307 ntp: Fix of 2 CVEs

CVE-2018-7185: unauthenticated packet with a zero-origin timestamp can reset an authenticated interleave association leading to denial of service. - CVE-2019-8936: NULL pointer dereference triggered by an authenticated mode 6 control packet with no value field...

curl: MQTT state machine confusion: PINGRESP/DISCONNECT with non-zero remaining_length dispatches to stale nextstate

Summary: In lib/mqtt.c, the state machine in mqttdoing lines 894-911 in curl 8.20.0 does not validate that PINGRESP 0xD0 and DISCONNECT 0xE0 packets have remaininglength == 0 as required by MQTT 3.1.1 spec sections 3.13.1 and 3.14.1. A malicious broker can send a PINGRESP fixed header with non-ze...

CLSA-2026-1777445542 libssh2: Fix of 2 CVEs

CVE-2019-3858: fix zero-byte allocation in sftppacketread - CVE-2019-3859: fix out-of-bounds reads in libssh2packetrequire...

Juniper Junos OS Vulnerability (JSA79188)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA79188 advisory. - A Missing Authentication for Critical Function vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows...

FreeRTOS-Plus-TCP security vulnerabilities

FreeRTOS-Plus-TCP is an extensible, open-source TCP/IP stack designed for use with FreeRTOS. Security vulnerabilities existed in versions prior to V4.2.6 and V4.4.1 of FreeRTOS-Plus-TCP. These vulnerabilities stemmed from insufficient data packet validation, allowing adjacent network participants...

Linux IoTLB vhost vsock DoS

The vulnerabilities of the functions vhostvsockallocpkt drivers/vhost/vsock.c and virtiotransportfreepkt net/vmwvsock/virtiotransportcommon.c in the Linux operating system’s IoTLB implementation are related to errors in resource allocation of large sizes. Exploiting these vulnerabilities can allo...

FreeBSD-SA-26:14.pf

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:14.pf Security Advisory The FreeBSD Project Topic: pf can overflow the stack parsing crafted SCTP packets Category: core Module: pf Announced: 2026-04-29...