CVE-2026-56362 PUBLISHED

ImageMagick - Heap-buffer-overflow Read in GetPixelIndex via OpenPixelCache Metadata Desynchronization

Assigner: VulnCheck
Reserved: 20.06.2026 Published: 08.07.2026 Updated: 08.07.2026

ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex.

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS Score: 2.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	High	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	Low	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:L
CVSS Score: 3.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	Low
Privileges Required	High	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	ImageMagick
Product	ImageMagick
Versions	Default: unaffected affected from 0 to 7.1.2-15 (excl.) Version 7.1.2-15 is unaffected

Vendor	ImageMagick
Product	ImageMagick
Versions	Default: unaffected affected from 0 to 6.9.13-40 (excl.) Version 6.9.13-40 is unaffected

CVE-2026-56362 PUBLISHED

ImageMagick - Heap-buffer-overflow Read in GetPixelIndex via OpenPixelCache Metadata Desynchronization

Metrics

Product Status

Credits

References

Problem Types