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    CVE-2026-28224

    Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when the server receives an op_crypt_key_callback packet without prior authentication, the port_server_crypt_callback handler is not initialized, resulting in a null pointer dereference and server crash. An unauthenticated attacker who knows only the server's IP and port can exploit this to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

    Published:Apr 17, 2026
    Last Modified:Apr 24, 2026
    EPS:Apr 17, 2026
    EPSS Score:0.0011
    CVSS Score:8.2

    Affected Products

    Vendor
    Firebirdsql
    Product
    Firebird

    Exploits

    https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-xrcw-wpjx-pr95https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-xrcw-wpjx-pr95

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-34232 (CVSS 7.5) — Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14…
    CVE-2026-33337 (CVSS 7.5) — Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14…
    CVE-2026-28214 (CVSS 6) — Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14…
    CVE-2026-27890 (CVSS 8.2) — Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14…
    CVE-2026-28212 (CVSS 7.5) — Firebird is an open-source relational database management system. In versions prior to 6.0.0, 5.0.4, 4.0.7 and…
    CVE-2025-65104 (CVSS 7.9) — Firebird is an open-source relational database management system. In versions FB3 of the client library placed…
    CVE-2025-24975 (CVSS 7.1) — Firebird is a relational database. Prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609, Firebird …
    CVE-2025-54989 (CVSS 5.3) — Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing…

    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