Vulnerability Report

CVE-2026-35215

Title: Division by Zero Denial of Service

Arbitrary File Access

Proof Of Concept

No public PoC currently indexed for CVE-2026-35215.

CWE Category CWE-369
Published Date Apr 17, 2026
Modified Date Apr 27, 2026
Exploit Status Not Found
Score 7.5 CVSS v3.1
Exploit Probability (EPSS)
0.16%

Vulnerability Summary

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.

Impacted Vendors

F
firebirdsql 1
F
firebird 1

Reference Links

https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14 https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7 https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4 https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-g99w-prq5-29c6
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-35215 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.