CVE-2026-40183
ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float
Severity Score
5.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-19, the JXL encoder has an heap write overflow when a user specifies that the image should be encoded as 16 bit floats. This issue has been fixed in version 7.1.2-19.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2026-04-09 CVE Reserved
- 2026-04-13 CVE Published
- 2026-04-14 CVE Updated
- 2026-05-15 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-122: Heap-based Buffer Overflow
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19 | X_refsource_misc | |
| https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-jvgr-9ph5-m8v4 | X_refsource_confirm | |
| https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0 | X_refsource_misc |
| URL | Date | SRC |
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| URL | Date | SRC |
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| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| ImageMagick Search vendor "ImageMagick" | ImageMagick Search vendor "ImageMagick" for product "ImageMagick" | < 7.1.2 Search vendor "ImageMagick" for product "ImageMagick" and version " < 7.1.2" | en |
Affected
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