CVE-2025-48379: Python Pillow

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Pillow is a Python imaging library. In versions 11.2.0 to before 11.3.0, there is a heap buffer overflow when writing a sufficiently large (>64k encoded with default settings) image in the DDS format due to writing into a buffer without checking for available space. This only affects users who save untrusted data as a compressed DDS image. This issue has been patched in version 11.3.0.

Affected products

• Python Pillow: version 11.2.1 only

Published 2025-07-01. Last modified 2026-06-17.