Firebird Null Pointer Dereference via CryptCallback causes DOS_CVE-2026-28224

8.2 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Description

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.

Basic Information

ID CVE-2026-28224

Source GitHub_M

Published Apr 17, 2026 at 18:38

Modified Apr 17, 2026 at 19:31

Affected Product

Vendor FirebirdSQL

Product firebird

Version >= 3.0.0, < 3.0.14

Affected Versions FirebirdSQL firebird >= 3.0.0, < 3.0.14
FirebirdSQL firebird >= 4.0.0, < 4.0.7
FirebirdSQL firebird >= 5.0.0, < 5.0.4

CWE Classification

CWE-476

References

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    "published": "2026-04-17T18:38:58.138Z",
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