Skip to content
Fencer Vulns
medium 5.3

CVE-2026-33899 json

ImageMagick: Heap BufferOverflow write of single zero byte when parsing XML

published 2026-04-13 6 mo ago modified 2026-07-30 3 mo ago also EUVD-2026-22100 , GHSA-cr67-pvmx-2pp2 , JLSEC-2026-993

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-189 and 6.9.13-44, when `Magick` parses an XML file it is possible that a single zero byte is written out of the bounds. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

Patch / fix

  • nuget Magick.NET-Q16-AnyCPU 14.12.0
  • nuget Magick.NET-Q16-HDRI-AnyCPU 14.12.0
  • nuget Magick.NET-Q16-HDRI-OpenMP-arm64 14.12.0
  • nuget Magick.NET-Q16-HDRI-arm64 14.12.0
  • nuget Magick.NET-Q16-HDRI-x64 14.12.0
  • nuget Magick.NET-Q16-HDRI-x86 14.12.0
  • nuget Magick.NET-Q16-OpenMP-arm64 14.12.0
  • nuget Magick.NET-Q16-OpenMP-x64 14.12.0
  • nuget Magick.NET-Q16-arm64 14.12.0
  • nuget Magick.NET-Q16-x64 14.12.0
  • nuget Magick.NET-Q16-x86 14.12.0
  • nuget Magick.NET-Q8-AnyCPU 14.12.0
  • nuget Magick.NET-Q8-OpenMP-arm64 14.12.0
  • nuget Magick.NET-Q8-OpenMP-x64 14.12.0
  • nuget Magick.NET-Q8-arm64 14.12.0
  • nuget Magick.NET-Q8-x64 14.12.0
  • nuget Magick.NET-Q8-x86 14.12.0
  • julia ImageMagick_jll 7.1.2023+0
  • imagemagick imagemagick 6.9.13-44, 7.1.2-19
  • imagemagick Debian 12 8:6.9.11.60+dfsg-1.6+deb12u9
  • imagemagick Debian 13 8:7.1.1.43+dfsg1-1+deb13u8
  • imagemagick Debian 14 8:7.1.2.19+dfsg1-1

debian advisories DEBIAN-CVE-2026-33899

  • ImageMagick SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 7.1.0.9-150400.6.87.1
  • ImageMagick SLE Module for Development Tools 15 SP7, SLE Module for Desktop Applications 15 SP7 7.1.1.43-150700.3.47.1
  • ImageMagick SLES for SAP 15 SP6, SLES 15 SP6-LTSS 7.1.1.21-150600.3.55.1
  • ImageMagick SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 6.8.8.1-71.241.1

suse advisories SUSE-SU-2026:2580-1SUSE-SU-2026:1598-1SUSE-SU-2026:1597-1SUSE-SU-2026:1596-1

  • ImageMagick openSUSE Leap 16.0 7.1.2.0-160000.8.1
  • ImageMagick openSUSE Tumbleweed 7.1.2.19-2.1

opensuse advisories openSUSE-SU-2026:20606-1openSUSE-SU-2026:10586-1

  • imagemagick Alpine 3.24, Alpine 3.23 7.1.2.19-r0

alpine advisories ALPINE-CVE-2026-33899

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-2026-33899 updated cvss 5.3

ImageMagick: Magick.NET: ImageMagick: Denial of Service via out-of-bounds write in XML parsing

  • 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
yes
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
nuget Magick.NET-Q16-AnyCPU
<14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-AnyCPU
<14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-OpenMP-arm64
<14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-arm64
<14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-x64
<14.12.0
14.12.0
nuget Magick.NET-Q16-HDRI-x86
<14.12.0
14.12.0
nuget Magick.NET-Q16-OpenMP-arm64
<14.12.0
14.12.0
nuget Magick.NET-Q16-OpenMP-x64
<14.12.0
14.12.0
nuget Magick.NET-Q16-arm64
<14.12.0
14.12.0
nuget Magick.NET-Q16-x64
<14.12.0
14.12.0
nuget Magick.NET-Q16-x86
<14.12.0
14.12.0
nuget Magick.NET-Q8-AnyCPU
<14.12.0
14.12.0
nuget Magick.NET-Q8-OpenMP-arm64
<14.12.0
14.12.0
nuget Magick.NET-Q8-OpenMP-x64
<14.12.0
14.12.0
nuget Magick.NET-Q8-arm64
<14.12.0
14.12.0
nuget Magick.NET-Q8-x64
<14.12.0
14.12.0
nuget Magick.NET-Q8-x86
<14.12.0
14.12.0
julia ImageMagick_jll
<7.1.2023+0
7.1.2023+0

Affected products

  • ImageMagick ImageMagick

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow
  • CWE-191 Integer Underflow (Wrap or Wraparound)

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.