CVE-2025-48379: python-pillow pillow Heap-based Buffer Overflow

Vulnerability summary

CVE-2025-48379 is a high (CVSS 7.1) Heap-based Buffer Overflow vulnerability in python-pillow pillow. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 01-07-2025
   PublishedVulnerability first disclosed.
2. 01-07-2025
   Last modifiedVulnerability information updated.

Description

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.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().