NVD / CVE Program· CNA VulnCheck

CVE-2026-56376: ImageMagick - Heap Use-After-Free in Meta Coder

Noroxi assessment

Priority: Monitor (action score 25/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.32% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
Fixed version: ImageMagick ImageMagick 6.9.13-40, 7.1.2-15.

Low priority for now. Upgrade to ImageMagick ImageMagick 6.9.13-40, 7.1.2-15 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

ImageMagick before 7.1.2-15 and 6.9.13-40 contains a heap use-after-free in the meta coder: when memory allocation fails, a single byte is written to a stale pointer. Remote attackers can trigger it by processing specially crafted image files, causing a denial of service.

MediumCVSS 6.3 · v4.0—No exploit Fix available

Published: Jun 23, 2026
Updated: Oct 29, 2026
EPSS: 0.3% · 25th percentile
CWE: CWE-416

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 25 / 40 · 6.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · VulnCheck: 6.3; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
imagemagick	imagemagick	cpe:2.3:a:imagemagick:imagemagick

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

imagemagick imagemagickbefore 6.9.13-40
imagemagick imagemagick7.0.0-0 and later · before 7.1.2-15

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

ImageMagick ImageMagick
- 7.1.2-15, 6.9.13-40not affected
- 7.0.0 and later · before 7.1.2-15affected · semver
- before 6.9.13-40affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	imagemagick	before 8:6.9.11.60+dfsg-1.6+deb12u12	8:6.9.11.60+dfsg-1.6+deb12u12
Debian:13	imagemagick	before 8:7.1.1.43+dfsg1-1+deb13u11	8:7.1.1.43+dfsg1-1+deb13u11
Debian:14	imagemagick	before 8:7.1.2.15+dfsg1-1	8:7.1.2.15+dfsg1-1
NuGet	Magick.NET-Q16-AnyCPU	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-arm64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-HDRI-AnyCPU	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-HDRI-arm64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-HDRI-OpenMP-arm64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-HDRI-OpenMP-x64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-HDRI-x64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-HDRI-x86	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-OpenMP-arm64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-OpenMP-x64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q16-OpenMP-x86	before 14.10.3	14.10.3
NuGet	Magick.NET-Q8-AnyCPU	before 14.10.3	14.10.3
NuGet	Magick.NET-Q8-arm64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q8-OpenMP-arm64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q8-OpenMP-x64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q8-x64	before 14.10.3	14.10.3
NuGet	Magick.NET-Q8-x86	before 14.10.3	14.10.3
openSUSE:Tumbleweed	ImageMagick	before 7.1.2.25-3.1	7.1.2.25-3.1
SUSE:Linux Enterprise Module for Desktop Applications 15 SP7	ImageMagick	before 7.1.0.9-150400.6.96.1	7.1.0.9-150400.6.96.1

Same product

imagemagick: all records

Other highest-scoring records for the same primary product.

CVE-2016-3714The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT coders in ImageMagick before 6.9.3-10 and 7.x beforKEV
92Now
CVE-2016-3718The (1) HTTP and (2) FTP coders in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allow remote attackers to conduct server-side request KEV
75This week
CVE-2016-3715The EPHEMERAL coder in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allows remote attackers to delete arbitrary files via a crafted imKEV
75This week

Published before and after this one in the same product

← EarlierCVE-2026-56378Jun 21, 2026 · ImageMagick - Heap Out-of-Bounds Read in PCD Decoder
25Monitor
← EarlierCVE-2026-56371Jun 23, 2026 · ImageMagick - Memory Leak in TXT File Processing via Texture Attribute
27Monitor
Later →CVE-2026-56379Jun 23, 2026 · ImageMagick - Command Injection via SVG Decoder
36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
ImageMagick ImageMagick	6.9.13-40	Vendor (CNA)
ImageMagick ImageMagick	7.1.2-15	Vendor (CNA)
debian:imagemagick	8:6.9.11.60+dfsg-1.6+deb12u12 · Debian:12	Package registry (OSV)
NuGet:Magick.NET-Q16-AnyCPU	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-arm64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-HDRI-AnyCPU	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-HDRI-arm64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-HDRI-OpenMP-arm64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-HDRI-OpenMP-x64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-HDRI-x64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-HDRI-x86	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-OpenMP-arm64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-OpenMP-x64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q16-OpenMP-x86	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q8-AnyCPU	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q8-arm64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q8-OpenMP-arm64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q8-OpenMP-x64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q8-x64	14.10.3	Package registry (OSV)
NuGet:Magick.NET-Q8-x86	14.10.3	Package registry (OSV)
opensuse:ImageMagick	7.1.2.25-3.1 · openSUSE:Tumbleweed	Package registry (OSV)
suse:ImageMagick	7.1.0.9-150400.6.96.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP7	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

ylwango613reporter

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-25983120 days apartImageMagick has Use After Free in MSLStartElement in "coders/msl.c"
39Monitor
CVE-2026-5637317 days apartImageMagick - Use-After-Free Write in PDB Decoder
25Monitor
CVE-2026-6186118 days apartImageMagick before 7.1.2-26 Use-After-Free in FormatMagickCaption
25Monitor
CVE-2026-6186022 days apartImageMagick before 7.1.2-26 Use-After-Free via freetype
25Monitor
CVE-2026-109268111 days apartImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 Use After Free in PDF Writer via JPEG2000
25Monitor
CVE-2026-4652313 days apartImageMagick: Use-After-Free in MSL decoder.
24Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/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-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

For records you follow, these changes also arrive as notifications. →

References

github.com/ImageMagick/ImageMagick/security/advisories/GHSA-2gq3-ww97-wfjm

Show all references (1 more)

www.vulncheck.com/advisories/imagemagick-heap-use-after-free-in-meta-coder

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records