CVE-2021-25290: Debian Linux

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is a negative-offset memcpy with an invalid size.

Affected products

• Debian Debian Linux: version 9.0 only
• Python Pillow: before 8.1.1 (fixed in 8.1.1)

Published 2021-03-19. Last modified 2026-06-17.