CVE-2025-68618 is a medium-severity (CVSS 5.3) CWE-674 vulnerability in Magick.NET-Q16-AnyCPU. A fix is available for Magick.NET-Q16-AnyCPU — see the affected versions and patch details below.
Magick's failure to limit the depth of SVG file reads caused a DoS attack.
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 CVE-2025-68618.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2025-68618 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,156 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
Magick.NET-Q16-AnyCPU.NETMagick.NET-Q16-HDRI-AnyCPU.NETMagick.NET-Q16-HDRI-x86.NETMagick.NET-Q16-x86.NETMagick.NET-Q8-AnyCPU.NETMagick.NET-Q8-x86.NETMagick.NET-Q8-arm64.NETMagick.NET-Q8-OpenMP-x64+9 moreReal-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
Summary
Using Magick to read a malicious SVG file resulted in a DoS attack.
Details
bt obtained using gdb:
#4 0x0000555555794c9c in ResizeMagickMemory (memory=0x7fffee203800, size=391344) at MagickCore/memory.c:1443
#5 0x0000555555794e5a in ResizeQuantumMemory (memory=0x7fffee203800, count=48918, quantum=8)
at MagickCore/memory.c:1508
#6 0x0000555555acc8ed in SVGStartElement (context=0x517000000080, name=0x5190000055e3 "g", attributes=0x0)
at coders/svg.c:1254
#7 0x00007ffff6799b1c in xmlParseStartTag () at /lib/x86_64-linux-gnu/libxml2.so.2
#8 0x00007ffff68c7bb8 in () at /lib/x86_64-linux-gnu/libxml2.so.2
#9 0x00007ffff67a03f1 in xmlParseChunk () at /lib/x86_64-linux-gnu/libxml2.so.2
This is related to the SVGStartElement and ResizeQuantumMemory functions.
PoC
-
Generate an SVG file
-
Read this file using Magick:
./magick /data/ylwang/Tools/LargeScan/targets/ImageMagick/test++/1.svg null
- Causes a DoS Attack
My server has a large amount of memory, causing a stack overflow to take a long time. I'll use the Windows release version as an example:
PS C:\Program Files\ImageMagick-7.1.2-Q8> .\magick.exe -ping 1.svg null:
PS C:\Program Files\ImageMagick-7.1.2-Q8> echo $LASTEXITCODE
-1073741571
The error code -1073741571 indicates a crash due to a stack overflow.
Impact
This is a DoS vulnerability and all applications using Magick to parse SVG files are affected.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | Magick.NET-Q16-AnyCPU | all versions | 14.10.1dotnet add package Magick.NET-Q16-AnyCPU --version 14.10.1 |
| .NETNuGet | Magick.NET-Q16-HDRI-AnyCPU | all versions | 14.10.1dotnet add package Magick.NET-Q16-HDRI-AnyCPU --version 14.10.1 |
| .NETNuGet | Magick.NET-Q16-HDRI-x86 | all versions | 14.10.1dotnet add package Magick.NET-Q16-HDRI-x86 --version 14.10.1 |
| .NETNuGet | Magick.NET-Q16-x86 | all versions | 14.10.1dotnet add package Magick.NET-Q16-x86 --version 14.10.1 |
| .NETNuGet | Magick.NET-Q8-AnyCPU | all versions | 14.10.1dotnet add package Magick.NET-Q8-AnyCPU --version 14.10.1 |
| .NETNuGet | Magick.NET-Q8-x86 | all versions | 14.10.1dotnet add package Magick.NET-Q8-x86 --version 14.10.1 |
Detection & mitigation playbook
Open-source dependencyDetect
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.
Fix
Update Magick.NET-Q16-AnyCPU to 14.10.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-68618 is resolved across your whole dependency graph.
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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-68618 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2025-68618. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
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.
Frequently Asked Questions
Is CVE-2025-68618 in your dependencies?
O3 Security finds CVE-2025-68618 across NuGet dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.