Is CVE-2026-28214 actively exploited?

CVE-2026-28214 has no public evidence of in-the-wild exploitation as of 2026-04-24.

What is the CVSS score for CVE-2026-28214?

CVE-2026-28214 has a CVSS score of 6 (MEDIUM severity). Vector: 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.

How do I patch CVE-2026-28214?

Patch guidance is available from firebirdsql security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-28214.

CVE-2026-28214 - remediation guidance & executive summary

Q: Which products are affected by CVE-2026-28214?

3 products: firebirdsql firebird, firebirdsql firebird, firebirdsql firebird.

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 Metrics

Vector: 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
Complexity: low
Privileges: low
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-190 · Integer Overflow CWE-835

Metadata

Primary Vendor: FIREBIRDSQL
Published: 4/17/2026
Last Modified: 4/24/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-28214

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary