Vulnerability Details CVE-2026-28214
Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the ClumpletReader::getClumpletSize() function can overflow the totalLength value when parsing a Wide type clumplet, causing an infinite loop. An authenticated user with INSERT privileges on any table can exploit this via a crafted Batch Parameter Block to cause a denial of service against the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 16.7%
CVSS Severity
CVSS v3 Score 6.5
References
Products affected by CVE-2026-28214
-
cpe:2.3:a:firebirdsql:firebird:-
-
cpe:2.3:a:firebirdsql:firebird:1.0
-
cpe:2.3:a:firebirdsql:firebird:1.0.2
-
cpe:2.3:a:firebirdsql:firebird:1.0.3
-
cpe:2.3:a:firebirdsql:firebird:1.5
-
cpe:2.3:a:firebirdsql:firebird:1.5.0.4306
-
cpe:2.3:a:firebirdsql:firebird:1.5.1
-
cpe:2.3:a:firebirdsql:firebird:1.5.2
-
cpe:2.3:a:firebirdsql:firebird:1.5.2.4731
-
cpe:2.3:a:firebirdsql:firebird:1.5.3.4870
-
cpe:2.3:a:firebirdsql:firebird:1.5.4.4910
-
cpe:2.3:a:firebirdsql:firebird:1.5.5
-
cpe:2.3:a:firebirdsql:firebird:1.5.6
-
cpe:2.3:a:firebirdsql:firebird:2.0.0
-
cpe:2.3:a:firebirdsql:firebird:2.0.0.12748
-
cpe:2.3:a:firebirdsql:firebird:2.0.1
-
cpe:2.3:a:firebirdsql:firebird:2.0.1.12855
-
cpe:2.3:a:firebirdsql:firebird:2.0.2
-
cpe:2.3:a:firebirdsql:firebird:2.0.3
-
cpe:2.3:a:firebirdsql:firebird:2.0.4
-
cpe:2.3:a:firebirdsql:firebird:2.0.5
-
cpe:2.3:a:firebirdsql:firebird:2.0.6
-
cpe:2.3:a:firebirdsql:firebird:2.0.7
-
cpe:2.3:a:firebirdsql:firebird:2.1
-
cpe:2.3:a:firebirdsql:firebird:2.1.0
-
cpe:2.3:a:firebirdsql:firebird:2.1.1
-
cpe:2.3:a:firebirdsql:firebird:2.1.2
-
cpe:2.3:a:firebirdsql:firebird:2.1.3
-
cpe:2.3:a:firebirdsql:firebird:2.1.4
-
cpe:2.3:a:firebirdsql:firebird:2.1.5
-
cpe:2.3:a:firebirdsql:firebird:2.1.6
-
cpe:2.3:a:firebirdsql:firebird:2.1.7
-
cpe:2.3:a:firebirdsql:firebird:2.1_beta
-
cpe:2.3:a:firebirdsql:firebird:2.5
-
cpe:2.3:a:firebirdsql:firebird:2.5.0
-
cpe:2.3:a:firebirdsql:firebird:2.5.1
-
cpe:2.3:a:firebirdsql:firebird:2.5.2
-
cpe:2.3:a:firebirdsql:firebird:2.5.3
-
cpe:2.3:a:firebirdsql:firebird:2.5.4
-
cpe:2.3:a:firebirdsql:firebird:2.5.5
-
cpe:2.3:a:firebirdsql:firebird:2.5.6
-
cpe:2.3:a:firebirdsql:firebird:2.5.7
-
cpe:2.3:a:firebirdsql:firebird:2.5.8
-
cpe:2.3:a:firebirdsql:firebird:2.5.9
-
cpe:2.3:a:firebirdsql:firebird:3.0
-
cpe:2.3:a:firebirdsql:firebird:3.0.0
-
cpe:2.3:a:firebirdsql:firebird:3.0.1
-
cpe:2.3:a:firebirdsql:firebird:3.0.10
-
cpe:2.3:a:firebirdsql:firebird:3.0.11
-
cpe:2.3:a:firebirdsql:firebird:3.0.12
-
cpe:2.3:a:firebirdsql:firebird:3.0.13
-
cpe:2.3:a:firebirdsql:firebird:3.0.2
-
cpe:2.3:a:firebirdsql:firebird:3.0.3
-
cpe:2.3:a:firebirdsql:firebird:3.0.4
-
cpe:2.3:a:firebirdsql:firebird:3.0.5
-
cpe:2.3:a:firebirdsql:firebird:3.0.6
-
cpe:2.3:a:firebirdsql:firebird:3.0.7
-
cpe:2.3:a:firebirdsql:firebird:3.0.8
-
cpe:2.3:a:firebirdsql:firebird:3.0.9
-
cpe:2.3:a:firebirdsql:firebird:4.0.0
-
cpe:2.3:a:firebirdsql:firebird:4.0.1
-
cpe:2.3:a:firebirdsql:firebird:4.0.2
-
cpe:2.3:a:firebirdsql:firebird:4.0.3
-
cpe:2.3:a:firebirdsql:firebird:4.0.4
-
cpe:2.3:a:firebirdsql:firebird:4.0.5
-
cpe:2.3:a:firebirdsql:firebird:4.0.6
-
cpe:2.3:a:firebirdsql:firebird:5.0.0
-
cpe:2.3:a:firebirdsql:firebird:5.0.1
-
cpe:2.3:a:firebirdsql:firebird:5.0.2
-
cpe:2.3:a:firebirdsql:firebird:5.0.3