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CVE-2026-28214

Firebird server hangs when using specific clumplet on batch creation PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
FirebirdSQL / firebirdaffected >= 3.0.0, < 3.0.14; affected >= 4.0.0, < 4.0.7; affected >= 5.0.0, < 5.0.4

CWE

CWE-190, CWE-835

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.