CVE-2021-36754

    Dashboard / Vulnerabilities / CVE-2021-36754

    CVE-2021-36754

    Published: 30 Jul 2021Last Modified: 7 Aug 2026

    Summary:

    Details: PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception.

    References: http://www.openwall.com/lists/oss-security/2021/07/26/2, https://doc.powerdns.com/authoritative/security-advisories/index.html, https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 8acf42e9ad4c339b7636693ed2d22e305a2e2335
    Fixed -b17a76a74e19601630752453adadcab6f60283b6

    Affected versions

    rec-4.5.0

    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
    CVE-2021-36754 | CVE-DB