CVE-2026-55577
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedImageMagick 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceImageMagick versions prior to 6.9.13-51 and 7.1.2-26 contain a heap buffer overflow vulnerability in the MVG (Magick Vector Graphics) decoder. When processing a specially crafted malicious image file, the decoder writes data beyond allocated heap memory boundaries, potentially leading to memory corruption, denial of service, or possible code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 6.9.13-51>= 7.0.0-0, < 7.1.2-26CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed ImageMagick versionRun 'convert -version' or 'magick -version' to display the installed version number. Compare the major.minor.patch values against the affected ranges: versions below 6.9.13-51, or versions 7.0.0-0 through 7.1.2-25.Affected if The installed version falls below 6.9.13-51 or is between 7.0.0-0 and 7.1.2-25 inclusive.
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Confirm MVG decoder is availableRun 'convert -list configure | grep -i mvg' or check if the MVG format is listed in 'convert -list format'. The MVG format must be present and not explicitly disabled for the vulnerability to be triggerable.Affected if MVG format support is enabled and listed in available decoders.
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Check ImageMagick security policyInspect the policy.xml file (commonly in /etc/ImageMagick-6/ or /etc/ImageMagick-7/) for any <policy> entries that restrict or disable the MVG coder. Look for patterns like '<policy domain="coder" rights="none" pattern="MVG"/>'.Affected if No policy explicitly blocks MVG processing, or the policy file is missing entirely.
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Verify ability to process untrusted image filesCheck if ImageMagick is configured to process files from untrusted sources, such as web applications, email attachments, or user-uploaded content. Review application or system configurations that invoke ImageMagick commands.Affected if ImageMagick can be invoked to process files from untrusted or external sources without additional validation.
A system is affected if it runs a vulnerable ImageMagick version with MVG support enabled and can process untrusted MVG image files.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped6.9.13-517.1.2-26
Upgrade ImageMagick to version 6.9.13-51 or 7.1.2-26 or later. If immediate patching is not feasible, consider disabling MVG file format processing or restricting ImageMagick's ability to process untrusted images in the affected systems.
ImageMagick 6.9.13-51 (6.x branch) or 7.1.2-26 (7.x branch)
- Check current ImageMagick version using 'convert --version' or 'magick --version'
- For ImageMagick 6.x users: upgrade to version 6.9.13-51 or later
- For ImageMagick 7.x users: upgrade to version 7.1.2-26 or later
- Verify the upgrade was successful by checking the version again
- Test critical image processing workflows to ensure functionality is intact
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-55577 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-55577 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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