CVE-2017-6363: Libgd

High severity, CVSS 8.1. EPSS: 1.4% chance of exploitation in the next 30 days.

In the GD Graphics Library (aka LibGD) through 2.2.5, there is a heap-based buffer over-read in tiffWriter in gd_tiff.c. NOTE: the vendor says "In my opinion this issue should not have a CVE, since the GD and GD2 formats are documented to be 'obsolete, and should only be used for development and testing purposes.'

Affected products

• Libgd Libgd: up to and including 2.2.5

Published 2020-02-27. Last modified 2026-06-17.