CVE-2006-4484: Buffer overflow in the LWZReadByte_ function in ext/gd/libgd/gd_gif_in.c in the GD extension in PHP before...

Security readout for executives and security teams

This is an old PHP GD image-processing vulnerability. A malformed GIF could trigger a buffer overflow when PHP parses GIF data. The public record says the impact is unknown, so the business risk depends mainly on whether legacy PHP/GD systems still process untrusted image uploads. Exposure is most likely on legacy PHP deployments older than 5.1.5 with the GD extension enabled, especially applications accepting or transforming user-supplied GIF files. Current supported PHP versions should not be assumed vulnerable from these sources alone. Treat this as a legacy-risk cleanup item. It is not listed as actively exploited in the provided sources, but any internet-facing obsolete PHP stack handling image uploads should be prioritized for upgrade or retirement. Mitigation focus: Upgrade PHP to 5.1.5 or a vendor-fixed package if still running affected versions.; Apply relevant distribution advisories from Ubuntu, Red Hat, Mandriva, Turbolinux, or rPath where applicable.; Disable or isolate GD-based GIF processing on legacy systems until patched..

Prepared

Jun 29, 2026, 10:45 UTC (UTC+00:00)

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