UBUNTU-CVE-2026-83525

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    UBUNTU-CVE-2026-83525

    Published: 28 Oct 2026Last Modified: 7 Nov 2026
    Upstream:
    CVE-2026-83525

    Summary:

    Details: Incorrect operator (CWE-480) in the FetchSnapshot RPC handler in Apache Kafka from 2.8.0 before 4.2.2, and from 4.3.0 before 4.3.2 on all platforms allows an authenticated attacker with CLUSTER_ACTION privilege to cause a denial of service (controller process termination) via a crafted FetchSnapshotRequest with an empty topics array or a topic with no partitions. Users are recommended to upgrade to version 4.2.2, 4.3.2, or 4.4.0, which fix this issue. Users on unsupported branches (4.1.x and earlier) should upgrade to 4.2.2 or later.

    References: https://ubuntu.com/security/CVE-2026-83525, https://www.cve.org/CVERecord?id=CVE-2026-83525, https://github.com/apache/kafka/pull/23185, https://kafka.apache.org/cve-list, http://www.openwall.com/lists/oss-security/2026/10/28/7

    Affected packages

    Package

    Name: kafka

    Purl: pkg:deb/ubuntu/kafka?arch=source&distro=esm-apps%2Fbionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.2.0u2-0ubuntu3.1
    2.2.0u2-0ubuntu3.2
    2.2.2u1-0ubuntu1+esm2

    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-2026-83525 | CVE-DB