CVE-2011-0755: Integer overflow in the mt_rand function in PHP before 5.3.4 might make it easier for context-dependent att...

Security readout for executives and security teams

Older PHP versions before 5.3.4 had a flaw in mt_rand where unusually large maximum values could make generated numbers easier to predict. Business impact depends on whether an application used mt_rand for security-sensitive decisions, such as unpredictable values. The provided sources do not show active exploitation. Exposure is likely limited to legacy PHP deployments before 5.3.4 and applications that call mt_rand with large maximum values. Risk is higher if those values influence authentication, authorization, tokens, or other security decisions, but the sources do not identify specific products. Treat this as a legacy exposure cleanup item unless PHP before 5.3.4 is still in production. If present in security-sensitive application paths, prioritize remediation because predictable randomness can undermine trust boundaries. Mitigation focus: Upgrade PHP to 5.3.4 or a supported fixed release.; Check PHP changelog and vendor guidance for the applicable maintenance path.; Review application code for mt_rand calls using large maximum values..

Prepared

Jun 28, 2026, 01:17 UTC (UTC+00:00)

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