CVE-2009-4134: Buffer underflow in the rgbimg module in Python 2.5 allows remote attackers to cause a denial of service (a...

Security readout for executives and security teams

This is a legacy Python 2.5 image-processing crash issue. A specially malformed black-and-white RGB image can trigger an invalid memory access in the rgbimg module, causing the application to stop. The main business risk is service interruption in systems that still process untrusted RGB image files with this old Python component. Exposure is most plausible in legacy systems running Python 2.5 or vendor-packaged Python components that parse untrusted RGB image files. Modern Python deployments are unlikely to use this exact runtime, but long-lived appliances, embedded systems, or old OS images should be checked. Treat this as a legacy exposure cleanup item, with higher priority only where old Python services process external image uploads. It is not listed as actively exploited in the provided evidence, but unsupported runtimes increase operational risk. Mitigation focus: Check Python and operating-system vendor advisories for fixed packages.; Retire or upgrade any remaining Python 2.5 runtime dependencies.; Avoid processing untrusted RGB image files with vulnerable legacy components..

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.