CVE-2026-56374 json
ImageMagick - Heap Buffer Overflow in FTXT Encoder via format Parameter
published 2026-04-14 6 mo ago modified 2026-10-25 14 d ago also EUVD-2026-42260 , GHSA-g4x5-mww6-m42x , GHSA-w54j-7wpm-crhj , JLSEC-2026-1055
- cvss
- 3.3
- 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 before 7.1.2-19 contains a heap buffer overflow vulnerability in the FTXT encoder due to missing boundary checks when parsing ftxt:format. Remote attackers can trigger an out of bounds read by crafting malicious FTXT image files to cause denial of service or information disclosure.
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-Q16-HDRI-OpenMP-x64 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 7.1.2-19
- imagemagick Debian 13 8:7.1.1.43+dfsg1-1+deb13u12
- imagemagick Debian 14 8:7.1.2.19+dfsg1-1
debian advisories DEBIAN-CVE-2026-56374
- ImageMagick SLE Module for Development Tools 15 SP7, SLE Module for Desktop Applications 15 SP7 7.1.1.43-150700.3.65.1
- ImageMagick SLES for SAP applications 16.0, SLES 16.0 7.1.2.0-160000.11.1
- ImageMagick SLES for SAP 15 SP6, SLES 15 SP6-LTSS 7.1.1.21-150600.3.73.1
suse advisories SUSE-SU-2026:3023-1SUSE-SU-2026:2877-1SUSE-SU-2026:22620-1
- ImageMagick openSUSE Leap 16.0 7.1.2.0-160000.11.1
- ImageMagick openSUSE Tumbleweed 7.1.2.27-1.1
opensuse advisories openSUSE-SU-2026:21291-1openSUSE-SU-2026:11228-1
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-2026-56374 updated cvss 3.3
ImageMagick: ImageMagick: Denial of Service and Information Disclosure via heap buffer overflow in FTXT encoder
-
Red Hat Enterprise Linux 6 ImageMagick, ImageMagick-c++, ImageMagick-perl Red Hat Enterprise Linux 7 ImageMagick, ImageMagick-c++, ImageMagick-perlaffected: 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
0.22% 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 | 4.0 | 4.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| GitHub | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| CNA | 4.0 | 4.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 7.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
| OSV | 3.1 | 7.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
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-Q16-HDRI-OpenMP-x64 | <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-125 Out-of-bounds Read
References
-
github.com
/ImageMagick/ImageMagick/security/advisories/GHSA-w54j-7wpm-crhj
vendor-advisory, web
-
vulncheck.com
/advisories/imagemagick-heap-buffer-overflow-in-ftxt-encoder-via-format-parameter
third-party-advisory, web
-
github.com
/ImageMagick/ImageMagick
package
-
github.com
/advisories/GHSA-g4x5-mww6-m42x
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-56374
web
Sources
- CVE List CVE-2026-56374
- GitHub Advisory GHSA-w54j-7wpm-crhj
- NVD CVE-2026-56374
- OSV JLSEC-2026-1055
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.