CVE-2021-25291: Python Pillow

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is an out-of-bounds read in TiffreadRGBATile via invalid tile boundaries.

Affected products

• Python Pillow: before 8.1.1 (fixed in 8.1.1)

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