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CVE-2026-93010VulnerabilityPublished

Microsoft · Dnsmasq: dnsmasq: --leasequery without address argument applies no source address check

Affects MicrosoftSource 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 3 Nov 2026, 08:58 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 2 Nov 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–

Description

A vulnerability in dnsmasq version 3.0 allows the --leasequery option without an address argument to bypass source address checks. This could potentially lead to unauthorized lease queries being accepted without verifying the source address.

References

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