CVE-2016-3981: Canonical Ubuntu Linux

High severity, CVSS 7.8. EPSS: 4.4% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the bmp_read_rows function in pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (out-of-bounds read or write access and crash) or possibly execute arbitrary code via a crafted image file.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.10 only
• Debian Debian Linux: version 7.0 only; version 8.0 only
• Optipng Project Optipng: up to and including 0.7.5

Published 2016-04-13. Last modified 2026-06-17.