CVE-2026-28214

| EUVD-2026-23466 MEDIUM
2026-04-17 GitHub_M
Denial Of Service Integer Overflow
6.0
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
patch_available
Apr 17, 2026 - 20:16 EUVD
Analysis Generated
Apr 17, 2026 - 19:32 vuln.today
CVSS Changed
Apr 17, 2026 - 19:22 NVD
6.0 (MEDIUM)

DescriptionNVD

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.

AnalysisAI

Integer overflow in Firebird database versions prior to 5.0.4, 4.0.7, and 3.0.14 allows authenticated users with INSERT privileges to trigger a denial of service via a malformed Batch Parameter Block that overflows the totalLength value in ClumpletReader::getClumpletSize(), causing infinite loop conditions on the server.

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CVE-2026-28214 vulnerability details – vuln.today
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