CVE-2026-28214

EUVD-2026-23466
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 64.17%
Affected Products (NVD)
VendorProductVersion
firebirdsqlfirebird
𝑥
< 3.0.14
firebirdsqlfirebird
4.0.0 ≤
𝑥
< 4.0.7
firebirdsqlfirebird
5.0.0 ≤
𝑥
< 5.0.4
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firebird3.0
bookworm
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
forky
3.0.14.ds7-1
fixed
sid
3.0.14.ds7-1
fixed
trixie
vulnerable
firebird4.0
forky
4.0.7.3271.ds6-1
fixed
sid
4.0.7.3271.ds6-1
fixed
trixie
vulnerable
trixie (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firebird3.0
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
ignored
resolute
needs-triage
firebird4.0
jammy
dne
noble
dne
questing
ignored
resolute
needs-triage