CVE-2026-28493 ImageMagick has a Integer Overflow leading to out of bounds write in SIXEL decoder

What is CVE-2026-28493?

CVE-2026-28493 is a medium-severity vulnerability in Imagemagick Imagemagick, published on 9 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16, an integer overflow vulnerability exists in the SIXEL decoer. The vulnerability allows an attacker to perform an out of bounds via a specially crafted image. This vulnerability is fixed in 7.1.2-16.

Weakness: CWE-190

Which versions are affected by CVE-2026-28493?

38 open source packages ship an affected version, including Magick.NET-Q16-AnyCPU, Magick.NET-Q16-HDRI-AnyCPU and Magick.NET-Q16-HDRI-OpenMP-arm64. It affects 1 product.

Products include Imagemagick Imagemagick.

How do I fix CVE-2026-28493?

Upgrade Magick.NET-Q16-AnyCPU to 14.10.4 or later.

Is CVE-2026-28493 being exploited?

There is no known exploitation of CVE-2026-28493 in the wild and no public exploit code.

Other vulnerabilities in Imagemagick Imagemagick

• CVE-2019-19952 Use after free in n/a Critical 9.8
• CVE-2018-16328 Null dereference in n/a Critical 9.8
• CVE-2018-16329 Null dereference in n/a Critical 9.8
• CVE-2017-18210 Null dereference in n/a Critical 9.8
• CVE-2017-14138 Denial of service in n/a Critical 9.8

All Imagemagick Imagemagick vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-28493, ECHO-252e-604b-f475, GHSA-r39q-jr8h-gcq2, JLSEC-2026-972, MINI-grmp-h3gf-7cx6, UBUNTU-CVE-2026-28493.