CVE-2016-4544: Debian Linux

Critical severity, CVSS 9.8. EPSS: 6.5% chance of exploitation in the next 30 days.

The exif_process_TIFF_in_JPEG function in ext/exif/exif.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 does not validate TIFF start data, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via crafted header data.

Affected products

• Debian Debian Linux: version 8.0 only
• Fedoraproject Fedora: version 24 only
• Opensuse Leap: version 42.1 only
• Opensuse Opensuse: version 13.2 only
• PHP PHP: from 5.5.0, before 5.5.35 (fixed in 5.5.35); from 5.6.0, before 5.6.21 (fixed in 5.6.21); from 7.0.0, before 7.0.6 (fixed in 7.0.6)

Published 2016-05-22. Last modified 2026-06-17.