VulnerabilityAnalyzed

CVE-2026-56361

ImageMagick before 7.1.2-19 contains an off-by-one error in morphology validation allowing out-of-bounds heap buffer reads.

MEDIUM 4.8EPSS 0.17%

Does this matter?

Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.

Description

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 4.0: 4.8 MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.17% probability · 7th percentile
CISA KEV: Not listed
Weakness: CWE-125
Affected: imagemagick/imagemagick
Source: disclosure@vulncheck.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.