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CVE-2026-46559 ImageMagick CVE debrief

CVE-2026-46559 is a medium-severity vulnerability in ImageMagick, a free and open-source software for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, an incorrect check in the JP2 will result in an heap buffer over-write of a single byte when specifying certain options. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.

Vendor
ImageMagick
Product
Unknown
CVSS
MEDIUM 4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-11
Advisory published
2026-06-10
Advisory updated
2026-06-11

Who should care

Users of ImageMagick versions prior to 6.9.13-48 and 7.1.2-23 should apply the patches to prevent exploitation of this vulnerability.

Technical summary

The vulnerability is caused by an incorrect check in the JP2, which can lead to a heap buffer over-write of a single byte. This can be exploited by specifying certain options.

Defensive priority

Medium

Recommended defensive actions

  • Apply patches: Upgrade to ImageMagick versions 6.9.13-48 or 7.1.2-23 or later.
  • Review and update: Review your systems and update to the patched versions.

Evidence notes

CVE-2026-46559 has a CVSS score of 4 and a severity of MEDIUM. The vulnerability was published on 2026-06-10T23:16:47.173Z and modified on 2026-06-11T18:42:17.210Z.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46559 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46559

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-46559 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46559

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.