CVE-2006-1240: Buffer overflow in inet_server.cpp in (1) fb_inet_server and (2) fbserver in Firebird 1.5.2.4731 allows loc...

Security readout for executives and security teams

CVE-2006-1240 is a legacy Firebird issue where a local user could abuse a buffer overflow in server components to gain higher privileges. The provided sources identify Firebird 1.5.2.4731 and the fb_inet_server and fbserver binaries. No source here shows active exploitation. Exposure is most likely on systems still running Firebird 1.5.2.4731 with local shell, service, or maintenance-user access. Internet exposure is not established by the supplied sources because the described attack path requires local use of an argument. Address this during legacy-platform risk reduction, with higher priority where untrusted local users or shared administrative access exist. It is not supported here as an emergency internet-facing threat, but privilege escalation on database hosts can materially increase incident impact. Mitigation focus: Inventory systems for Firebird 1.5.2.4731 installations.; Check Firebird vendor guidance for the fixed or supported replacement version.; Restrict local interactive access to Firebird host systems..

Prepared

Jun 29, 2026, 13:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.