4.3
MediumCVSS 3.1 · from redhat
CVE-2026-93010
Dnsmasq: dnsmasq: --leasequery without address argument applies no source address check
rhceph/alloy-rhel10 · Missing authorization · CWE-862Affectedrhceph/alloy-rhel10, dnsmasq, dnsmasq and 11 more
FixNo fix listed yet.
PublishedOct 29, 13:13 · redhat
ScoredOct 29 · 4.3 · redhat
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:05 UTC
What we know
No known exploitation. CISA KEV, checked 22:05 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker has to be on the same network. CVSS: adjacent network.
Description
A flaw was found in dnsmasq. When DHCP leasequery is enabled without listing allowed source addresses, the server does not check who sent the query. A host on the local network can request DHCP lease records and learn assigned addresses, MAC addresses, hostnames, and related lease metadata. The feature is off unless an administrator turns it on.
From redhat
Affected and fixed versions
ProductAffectedFixed inrhceph/alloy-rhel10all versions–dnsmasqall versions–dnsmasqall versions–dnsmasqall versions–dnsmasqall versions–dnsmasqall versions–openshift4/ose-baremetal-runtimecfg-rhel8all versions–openshift4/ose-baremetal-runtimecfg-rhel9all versions–openshift/ose-rhel-coreos-8all versions–openshift/ose-rhel-coreos-9all versions–openshift5/ose-baremetal-runtimecfg-rhel9all versions–openshift/ose-rhel-coreos-9all versions–dnsmasqall versions–rhoso-operators/infra-rhel9-operatorall versions–
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known