CVE-2026-35215

Severity CVSS v4.0:

Pending analysis

Type:

CWE-369 Divide By Zero

Publication date:

17/04/2026

Last modified:

27/04/2026

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 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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:firebirdsql:firebird::::::::	3.0.0 (including)	3.0.14 (excluding)
cpe:2.3:a:firebirdsql:firebird::::::::	4.0.0 (including)	4.0.7 (excluding)
cpe:2.3:a:firebirdsql:firebird::::::::	5.0.0 (including)	5.0.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-35215

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools