Skip to content
Fencer Vulns
medium 5.9

CVE-2026-55577 json

ImageMagick: Heap Buffer Overflow in ImageMagick MVG decoder

published 2026-07-01 4 mo ago modified 2026-07-30 3 mo ago also EUVD-2026-41121 , JLSEC-2026-1037

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

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.

Patch / fix

  • julia ImageMagick_jll 7.1.2028+0
  • imagemagick imagemagick 6.9.13-51, 7.1.2-26
  • imagemagick Debian 12 8:6.9.11.60+dfsg-1.6+deb12u12
  • imagemagick Debian 13 8:7.1.1.43+dfsg1-1+deb13u11
  • imagemagick Debian 14 8:7.1.2.26+dfsg1-1

debian advisories DEBIAN-CVE-2026-55577

  • ImageMagick openSUSE Tumbleweed 7.1.2.27-1.1

opensuse advisories openSUSE-SU-2026:11228-1

  • imagemagick Alpine 3.24, Alpine 3.23 7.1.2.27-r0

alpine advisories ALPINE-CVE-2026-55577

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-55577 updated cvss 5.9

ImageMagick: ImageMagick: Heap buffer overflow in MVG decoder allows out-of-bounds write

  • Red Hat Enterprise Linux 6 ImageMagick, ImageMagick-c++, ImageMagick-perl Red Hat Enterprise Linux 7 ImageMagick, ImageMagick-c++, ImageMagick-perl
    affected: workaround, no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia ImageMagick_jll
<7.1.2028+0
7.1.2028+0

Affected products

  • ImageMagick ImageMagick

Classification

Weakness
  • CWE-754 Improper Check for Unusual or Exceptional Conditions
  • CWE-755 Improper Handling of Exceptional Conditions
  • CWE-787 Out-of-bounds Write

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.