CVE-2026-35215 Details
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.
A denial-of-service vulnerability has been identified in Firebird versions prior to 5.0.4, 4.0.7, and 3.0.14. The issue arises in the sdl_desc() function, which fails to validate the length of a decoded SDL descriptor from a slice packet. This lack of validation allows a zero-length descriptor to be used in calculations, leading to a division by zero error. An unauthenticated attacker can exploit this vulnerability by sending a crafted slice packet, causing the server to crash.
Users can upgrade to Firebird versions 5.0.4, 4.0.7, or 3.0.14 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14 | [email protected] | Release Notes |
| https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7 | [email protected] | Release Notes |
| https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4 | [email protected] | Release Notes |
| https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-g99w-prq5-29c6 | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-369 | Divide By Zero | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| firebirdsql firebird | >= 3.0.0, < 3.0.14 >= 4.0.0, < 4.0.7 >= 5.0.0, < 5.0.4 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 27, 2026 | Initial Analysis | [email protected] |
| Apr 17, 2026 | New CVE Received | [email protected] |