CVE-2026-56372: imagemagick Heap-based Buffer Overflow

Vulnerability summary

CVE-2026-56372 is a critical (CVSS 9.1) Heap-based Buffer Overflow vulnerability in imagemagick. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.8% of scored vulnerabilities.

Timeline

1. 11-07-2026
   PublishedVulnerability first disclosed.
2. 13-07-2026
   Last modifiedVulnerability information updated.

Description

ImageMagick before 7.1.2-19 contains a heap buffer overflow vulnerability in the magnify operation that allows attackers to read out of bounds memory. An unrecognized magnify:method value triggers an out of bounds read, potentially exposing sensitive information or causing denial of service.

• 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().