CVE-2009-4880: Multiple integer overflows in the strfmon implementation in the GNU C Library (aka glibc or libc6) 2.10.1 a...

Security readout for executives and security teams

CVE-2009-4880 is an old glibc currency-formatting flaw. If software lets an attacker control a money-format string, affected systems may consume excessive memory or crash. The sources describe denial of service, not data theft or code execution. Exposure is most likely on legacy Linux systems using glibc/libc6 2.10.1 or earlier, especially applications that pass user-influenced strings into strfmon or PHP money_format. Modern maintained distributions are less likely exposed if vendor security updates were applied. Treat as a moderate legacy-platform risk. Prioritize systems that are internet-facing, unsupported, or process user-supplied formatting data. The main business impact is service disruption rather than compromise, based on available sources. Mitigation focus: Apply vendor glibc/libc6 security updates from the relevant Linux distribution.; Check Ubuntu, Debian, Gentoo, Mandriva, and Red Hat guidance for affected packages.; Retire or isolate unsupported systems running glibc 2.10.1 or earlier..

Prepared

Jun 28, 2026, 02:49 UTC (UTC+00:00)

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