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CVE-2026-28214

6.0 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.0 · firebirdsqlNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*

References 4