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HIGHCVE-2026-34232Published Modified CNA GitHub_M

CVE-2026-34232: Firebird: DoS via `op_response` packet from client

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the xdr_status_vector() function does not handle the isc_arg_cstring type when decoding an op_response packet, causing a server crash when one is encountered in the status vector. An unauthenticated attacker can exploit this by sending a crafted op_response packet to the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
—
Affected Products
1
Affected packages
  • FirebirdSQL / firebird
    >= 3.0.0, < 3.0.14 · >= 4.0.0, < 4.0.7 · >= 5.0.0, < 5.0.4
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References