CVE-2026-28214

MEDIUM EPSS 62.4%
Published Apr 17, 20262mo ago · Modified Jun 17, 20262w ago
6.0 CVSS 4.0
Medium
Find Similar
Published Apr 17, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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 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.

CVSS Details

Base Score
6.0
Exploitability
—
Impact
—
Vector string
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

Threat Intelligence

EPSS Exploit Probability
62.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-190 Integer Overflow or Wraparound Numeric Error
CWE-835

Affected Products 3

VendorProductVersionRange
firebirdsqlfirebird* <3.0.14
firebirdsqlfirebird*≥4.0.0  –  <4.0.7
firebirdsqlfirebird*≥5.0.0  –  <5.0.4

References 4

  • github.com https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14
    Release Notes
  • github.com https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7
    Release Notes
  • github.com https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4
    Release Notes
  • github.com https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7cq5-994r-jhrf
    ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.