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VulnerabilityPublished

CVE-2026-93010: dnsmasq · Missing Authorization

Source GCVE Database

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Authoritative record:CVE-2026-93010· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium.

Data as of 29 Oct 2026, 16:39 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.14.3
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Ceph Storage 9rhceph/alloy-rhel10Affected–Fixed in–
Red Hat Enterprise Linux 10dnsmasqAffected–Fixed in–
Red Hat Enterprise Linux 6dnsmasqAffected–Fixed in–
Red Hat Enterprise Linux 7dnsmasqAffected–Fixed in–
Red Hat Enterprise Linux 8dnsmasqAffected–Fixed in–
Red Hat Enterprise Linux 9dnsmasqAffected–Fixed in–

AI-suggested

Red Hat advises the following mitigations: 1) Prefer configuring leasequery with specific allowed source addresses (e.g., --leasequery=<addr>[/prefix]) to restrict which relays may query. 2) Do not enable leasequery if it is not needed, as it is off by default. 3) If unrestricted leasequery is required, use firewall rules to limit which hosts can send DHCP packets to dnsmasq. Administrators should review their configurations accordingly.

Description

A vulnerability in dnsmasq occurs when the DHCP leasequery feature is enabled without restricting allowed source addresses. This flaw allows any host on the local network to request DHCP lease records, revealing assigned IP addresses, MAC addresses, hostnames, and lease metadata. The leasequery feature is disabled by default and must be explicitly enabled by an administrator. Red Hat rates this vulnerability as low impact because the exposed data is not highly sensitive and the feature is opt-in.

References

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