UBUNTU-CVE-2026-93006

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    UBUNTU-CVE-2026-93006

    Published: 29 Oct 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-93006

    Summary:

    Details: A flaw was found in dnsmasq. The TFTP server can serve the wrong file contents because a recently used transfer cache is not invalidated when a transfer finishes. An attacker on the local network who can request a TFTP file may cause a later client to receive previously cached data instead of the requested file. In PXE network-boot environments this can substitute attacker-chosen boot content for a victim machine.

    References: https://ubuntu.com/security/CVE-2026-93006, https://www.cve.org/CVERecord?id=CVE-2026-93006, https://access.redhat.com/security/cve/CVE-2026-93006, https://bugzilla.redhat.com/show_bug.cgi?id=2536075

    Affected packages

    Package

    Name: dnsmasq

    Purl: pkg:deb/ubuntu/dnsmasq?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.66-4ubuntu1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2026-93006 | CVE-DB