CVE-2016-3634: Libtiff

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

The tagCompare function in tif_dirinfo.c in the thumbnail tool in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (out-of-bounds read) via vectors related to field_tag matching.

Affected products

• Libtiff Libtiff: up to and including 4.0.6

Published 2016-10-03. Last modified 2026-06-17.