Vulnerability Details CVE-2026-35215
Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the sdl_desc() function does not validate the length of a decoded SDL descriptor from a slice packet. A zero-length descriptor is later used to calculate the number of slice items, causing a division by zero. An unauthenticated attacker can exploit this by sending a crafted slice packet to crash 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 17.3%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-35215
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cpe:2.3:a:firebirdsql:firebird:3.0.0
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cpe:2.3:a:firebirdsql:firebird:3.0.1
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cpe:2.3:a:firebirdsql:firebird:3.0.10
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cpe:2.3:a:firebirdsql:firebird:3.0.11
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cpe:2.3:a:firebirdsql:firebird:3.0.12
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cpe:2.3:a:firebirdsql:firebird:3.0.13
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cpe:2.3:a:firebirdsql:firebird:3.0.2
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cpe:2.3:a:firebirdsql:firebird:3.0.3
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cpe:2.3:a:firebirdsql:firebird:3.0.4
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cpe:2.3:a:firebirdsql:firebird:3.0.5
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cpe:2.3:a:firebirdsql:firebird:3.0.6
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cpe:2.3:a:firebirdsql:firebird:3.0.7
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cpe:2.3:a:firebirdsql:firebird:3.0.8
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cpe:2.3:a:firebirdsql:firebird:3.0.9
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cpe:2.3:a:firebirdsql:firebird:4.0.0
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cpe:2.3:a:firebirdsql:firebird:4.0.1
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cpe:2.3:a:firebirdsql:firebird:4.0.2
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cpe:2.3:a:firebirdsql:firebird:4.0.3
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cpe:2.3:a:firebirdsql:firebird:4.0.4
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cpe:2.3:a:firebirdsql:firebird:4.0.5
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cpe:2.3:a:firebirdsql:firebird:4.0.6
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cpe:2.3:a:firebirdsql:firebird:5.0.0
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cpe:2.3:a:firebirdsql:firebird:5.0.1
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cpe:2.3:a:firebirdsql:firebird:5.0.2
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cpe:2.3:a:firebirdsql:firebird:5.0.3