ImageMagick 7.1.2-19 OOB in ConnectedComponentsImage CLI
CVE-2026-56370 Published on June 24, 2026
ImageMagick - Out-of-bounds Access in ConnectedComponentsImage via connected-components Artifact
ImageMagick before 7.1.2-19 contains an out-of-bounds access vulnerability in ConnectedComponentsImage() when processing connected-components artifacts with invalid indices. Attackers can trigger access violations by specifying malformed connected-components definitions via CLI, causing denial of service or potential code execution.
Vulnerability Analysis
CVE-2026-56370 is exploitable with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
Out-of-bounds Read
The software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
Products Associated with CVE-2026-56370
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Affected Versions
ImageMagick:- Before 7.1.2-19 is affected.
- Version 7.1.2-19 is unaffected.
- Before 6.9.13-44 is affected.
- Version 6.9.13-44 is unaffected.