CVE-2026-27890: Improper Restriction of Operations within the Bounds of a Memory Buffer

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when processing CNCTspecificdata segments during authentication, the server assumes segments arrive in strictly ascending order. If segments arrive out of order, the Array class's grow...