CVE-2026-10773

The DHCPv4 client helper netdhcpv4msgtypename in subsys/net/lib/dhcpv4/dhcpv4.c indexes a static 8-element const char name table after a faulty bounds check. The guard used msgtype = sizeofname instead of msgtype = ARRAYSIZEname; sizeof returns the byte size of the pointer array 32 on 32-bit, 64 ...

Cisco IOS XR Software Security Vulnerability

Cisco IOS XR is an operating system developed by Cisco for its network devices. A security vulnerability exists in Cisco IOS XR Software, which stems from a security flaw in the DHCPv4 server functionality that could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd proces...

PT-2018-3805 · Cisco · Cisco Ios +1

Name of the Vulnerable Software and Affected Versions: Cisco IOS and IOS XE Software affected versions not specified Description: A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 DHCPv4 packets could...

Cisco IOS DHCP Relay Code Execution

The vulnerability of the DHCP relay subsystem in Cisco IOS and Cisco IOS XE systems is caused by buffer overflow. Exploiting this vulnerability allows a malicious actor to execute arbitrary code or trigger a Denial-of-Service attack DoS, along with a system reboot, using a specially crafted DHCPv...

ISC Kea kea-dhcp4 and kea-dhcp6 Server Denial of Service Vulnerabilities

ISC Kea is an open source DHCPv4 and DHCPv6 server developed by ISC Internet Systems Consortium. A security vulnerability exists in ISC Kea's kea-dhcp4 and kea-dhcp6 servers, versions 0.9.2 and 1.0.0-beta. A remote attacker can exploit the vulnerability by sending malformed packets to cause a...