CVE-2026-56361 PUBLISHED

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

Assigner: VulnCheck
Reserved: 20.06.2026 Published: 30.06.2026 Updated: 01.07.2026

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.

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS Score: 4.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

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

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

CVSS 3.1

Product Status

Vendor	ImageMagick
Product	ImageMagick
Versions	Default: unaffected affected from 0 to 7.1.2-19 (excl.) Version 7.1.2-19 is unaffected

Vendor	ImageMagick
Product	ImageMagick
Versions	Default: unaffected affected from 0 to 6.9.13-44 (excl.) Version 6.9.13-44 is unaffected

CVE-2026-56361 PUBLISHED

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

Metrics

Product Status

Credits

References

Problem Types