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Vulnerability record · CVE-2026-34232 · published 17 April 2026

CVE-2026-34232: Firebirdsql firebird vulnerability

Firebirdsql · Firebird

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.

7.5 CVSS 3.1 High EPSS 0.70% · top 49.0% CWE-228 · CWE-228
7.5CVSS 3.1 base score
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14 Release Notes
https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7 Release Notes
https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4 Release Notes
https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7jq3-6j3c-5cm2 ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2008-0467Firebirdsql firebird memory buffer overflow vulnerabilityStack-based buffer overflow in Firebird before 2.0.4, and 2.1.x before 2.1.0 RC1, might allow remote attackers to execute arbitrary code via a long u…EPSS 6.4%10.0CVE-2007-4992Firebirdsql firebird memory buffer overflow vulnerabilityStack-based buffer overflow in the process_packet function in fbserver.exe in Firebird SQL 2.0.2 allows remote attackers to execute arbitrary code vi…EPSS 7.7%10.0CVE-2007-5245Firebirdsql firebird memory buffer overflow vulnerabilityMultiple stack-based buffer overflows in Firebird LI 1.5.3.4870 and 1.5.4.4910, and WI 1.5.3.4870 and 1.5.4.4910, allow remote attackers to execute a…EPSS 8.9%10.0CVE-2007-5246Firebirdsql firebird memory buffer overflow vulnerabilityMultiple stack-based buffer overflows in Firebird LI 2.0.0.12748 and 2.0.1.12855, and WI 2.0.0.12748 and 2.0.1.12855, allow remote attackers to execu…EPSS 6.6%10.0CVE-2007-3181Bakbone netvault vulnerabilityBuffer overflow in fbserver.exe in Firebird SQL 2 before 2.0.1 allows remote attackers to execute arbitrary code via a large p_cnct_count value in a …EPSS 13%10.0CVE-2001-0008Borland software interbase vulnerabilityBackdoor account in Interbase database server allows remote attackers to overwrite arbitrary files using stored procedures.EPSS 13%9.9CVE-2026-40342Firebirdsql firebird path traversal vulnerabilityFirebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the external engine plugin loader con…EPSS 0.85%8.8CVE-2025-24975Firebirdsql firebird vulnerabilityFirebird is a relational database. Prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609, Firebird is vulnerable if ExtConnPoolSize is not…EPSS 0.52%

Source: NIST National Vulnerability Database (record CVE-2026-34232), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.