CVE-2026-21920 Junos OS: SRX Series: If a specific request is processed by the DNS subsystem flowd will crash

An Unchecked Return Value vulnerability in the DNS module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. If an SRX Series device configured for DNS processing, receives a specifically formatted DNS request flowd will...

EUVD-2008-3805

Malware in sbrugna...

Cisco Firepower Threat Defense Software DNS Inspection DoS (cisco-sa-asaftd-dos-nJVAwOeq)

A vulnerability in the DNS inspection handler of Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause a denial of service condition DoS on an affected device. This vulnerability is due to a lack of proper processing of incoming requests. An attacker could...

The vulnerability of the Windows DNS service for Windows operating systems allows a perpetrator to cause a service failure.

The vulnerability of the Windows DNS service for Windows operating systems is related to errors in memory object handling. Exploiting this vulnerability can allow a malicious actor to cause service failures through specially crafted DNS requests...

CVE-2008-3819

dnsserver in Cisco Application Control Engine Global Site Selector GSS before 3.01 allows remote attackers to cause a denial of service daemon crash via a series of crafted DNS requests, aka Bug ID CSCsj70093...