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MEDIUM severity

ImageMagick has NULL pointer dereference in ReadSFWImage after DestroyImageInfo (sfw.c)GHSA-p33r-fqw2-rqmm

MEDIUMFix: ImageMagick/ImageMagick@332c156

GHSA-p33r-fqw2-rqmm is a medium-severity (CVSS 5.3) NULL Pointer Dereference vulnerability in Magick.NET-Q16-AnyCPU. A fix is available for Magick.NET-Q16-AnyCPU — see the affected versions and patch details below.

Also known asCVE-2026-25795
Published
Updated
Affected
18 pkgs
Patched
18 / 18
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-p33r-fqw2-rqmm.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs37th percentile — riskier than 37% of all scored CVEsHighest risk
0.00%0.33%0.65%0.98%0.0%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

18 pkgs affected
.NETMagick.NET-Q16-AnyCPU.NETMagick.NET-Q16-HDRI-AnyCPU.NETMagick.NET-Q16-HDRI-OpenMP-arm64.NETMagick.NET-Q16-HDRI-OpenMP-x64.NETMagick.NET-Q16-HDRI-arm64.NETMagick.NET-Q16-HDRI-x64.NETMagick.NET-Q16-HDRI-x86.NETMagick.NET-Q16-OpenMP-arm64+10 more

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

In ReadSFWImage() (coders/sfw.c), when temporary file creation fails, read_info is destroyed before its filename member is accessed, causing a NULL pointer dereference and crash.

AddressSanitizer:DEADLYSIGNAL
=================================================================
==1414421==ERROR: AddressSanitizer: UNKNOWN SIGNAL on unknown address 0x000000000000 (pc 0x56260222912f bp 0x7ffec0a193b0 sp 0x7ffec0a19360 T0)
    #0 0x56260222912f  (/data/ylwang/LargeScan/targets/ImageMagick/utilities/magick+0x235f12f)

Affected Packages

18 total 18 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetMagick.NET-Q16-AnyCPUall versions14.10.3dotnet add package Magick.NET-Q16-AnyCPU --version 14.10.3
.NETNuGetMagick.NET-Q16-HDRI-AnyCPUall versions14.10.3dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.10.3
.NETNuGetMagick.NET-Q16-HDRI-OpenMP-arm64all versions14.10.3dotnet add package Magick.NET-Q16-HDRI-OpenMP-arm64 --version 14.10.3
.NETNuGetMagick.NET-Q16-HDRI-OpenMP-x64all versions14.10.3dotnet add package Magick.NET-Q16-HDRI-OpenMP-x64 --version 14.10.3
.NETNuGetMagick.NET-Q16-HDRI-arm64all versions14.10.3dotnet add package Magick.NET-Q16-HDRI-arm64 --version 14.10.3
.NETNuGetMagick.NET-Q16-HDRI-x64all versions14.10.3dotnet add package Magick.NET-Q16-HDRI-x64 --version 14.10.3

Affected Products

1 product · 2 configurations
Application
imagemagickimagemagick
≥ 7.0.0-0 && < 7.1.2-15
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Magick.NET-Q16-AnyCPU, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update Magick.NET-Q16-AnyCPU to 14.10.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-p33r-fqw2-rqmm is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

This MODERATE impact flaw in ImageMagick can lead to a denial of service due to a NULL pointer dereference when processing a crafted SFW image file. The vulnerability occurs if temporary file creation fails during image processing. Red Hat Enterprise Linux 6 ELS and 7 ELS are affected by this flaw.

Workaround published by Red Hat
To reduce the risk associated with this vulnerability, avoid processing untrusted SFW image files with ImageMagick. If ImageMagick is deployed in environments where it processes untrusted input, consider implementing sandboxing or resource limits for ImageMagick processes to contain potential crashes and limit impact.
Source: Red Hat security advisory for GHSA-p33r-fqw2-rqmm (CC BY 4.0)

Frequently Asked Questions

In `ReadSFWImage()` (`coders/sfw.c`), when temporary file creation fails, `read_info` is destroyed before its `filename` member is accessed, causing a NULL pointer dereference and crash. ``` AddressSanitizer:DEADLYSIGNAL ================================================================= ==1414421==ERROR: AddressSanitizer: UNKNOWN SIGNAL on unknown address 0x000000000000 (pc 0x56260222912f bp 0x7ffec0a193b0 sp 0x7ffec0a19360 T0) #0 0x56260222912f (/data/ylwang/LargeScan/targets/ImageMagick/utilities/magick+0x235f12f) ```
O3 Security · Impact-Aware SCA

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