CVE-2025-21591

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...

The vulnerability of DHCP Snooping on Cisco IOS XE operating systems allows a intruder to trigger a service failure.

The vulnerability of DHCP Snooping in Cisco IOS XE operating systems is related to a logical priority error during the processing of IPv4 packets. Exploiting this vulnerability allows an attacker to cause service interruptions by sending specially crafted packets remotely...