CVE-2026-56361

LOW 3.3

ImageMagick - Heap Buffer Overflow via Off-by-One in Morphology Processing

CVSS Score

3.3

EPSS Score

0.0%

EPSS Percentile

0th

ImageMagick before 7.1.2-19 contains an off-by-one error in morphology validation allowing out-of-bounds heap buffer reads. Attackers can trigger heap buffer overflow by providing incorrect morphology parameters causing single pixel memory access violations.

CWE	CWE-125
Vendor	imagemagick
Product	imagemagick
Published	Jun 30, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

ImageMagick / ImageMagick

0 < 7.1.2-19

ImageMagick / ImageMagick

0 < 6.9.13-44

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-q8h3-jv9v-57qx vulncheck.com: https://www.vulncheck.com/advisories/imagemagick-heap-buffer-overflow-via-off-by-one-in-morphology-processing

Credits

🔍 shitianyu-2004