CVE-2026-55577 ImageMagick: Heap Buffer Overflow in ImageMagick MVG decoder

Medium 5.9 Published 1 Jul 2026 Updated 1 Jul 2026

A heap buffer overflow in the MVG decoder allows attackers to execute arbitrary code or cause denial of service via crafted images.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-55577?

CVE-2026-55577 is a medium-severity memory corruption vulnerability in Imagemagick Imagemagick, published on 1 Jul 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 6.9.13-51 and 7.1.2-26, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when processing a crafted image. This issue has been fixed in versions 6.9.13-51 and 7.1.2-26.

Weakness: CWE-787, CWE-755, CWE-754

Which versions are affected by CVE-2026-55577?

It affects 1 product.

Products include Imagemagick Imagemagick.

How do I fix CVE-2026-55577?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-55577 being exploited?

There is no known exploitation of CVE-2026-55577 in the wild and no public exploit code.

All Imagemagick Imagemagick vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-55577, ECHO-f87c-5fbc-0b6a, GHSA-wx47-rm3x-jx6p, JLSEC-2026-1037, MINI-27hq-hmgh-pch2, UBUNTU-CVE-2026-55577.