CVE-2025-48379 HIGH

CVE-2025-48379: Pillow Vulnerable to Write Buffer Overflow on BCn encoding

Vendor Python-Pillow
Product Pillow
Weakness CWE-122
Published July 1, 2025
Last update July 1, 2025

CVSS base score

7.1/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 1, 2025 CVE published
July 1, 2025 Record updated