Medium 6.5Published Apr 17, 2026

CVE-2026-28214Firebird is an open-source relational database management system.

Updated under an hour ago (2026-10-19 07:30 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for firebirdsql firebird

Exploited in the last 30 days

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: 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-190, CWE-835
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

firebirdsql firebird firebirdsql:firebird	before 3.0.14; from 4.0.0 before 4.0.7; from 5.0.0 before 5.0.4	NVD

References

https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14release-notes
https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7release-notes
https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4release-notes
https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7cq5-994r-jhrfexploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.