CVE-2026-40183— ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float
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I. Basic Information for CVE-2026-40183
Vulnerability Information
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Vulnerability Title
ImageMagick: Heap buffer overflow when encoding JXL image with a 16-bit float
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
ImageMagick 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ImageMagick是ImageMagick开源的一套开源的图像处理软件。可读取、转换或写入多种格式的图片。 ImageMagick 7.1.2-19之前版本存在安全漏洞，该漏洞源于JXL编码器存在堆写入溢出，可能导致崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| ImageMagick | ImageMagick | < 7.1.2-19 | - |
II. Public POCs for CVE-2026-40183
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Release Magick.NET 14.12.0 · dlemstra/Magick.NET · GitHubx_refsource_MISC
- Release 7.1.2-19 · ImageMagick/ImageMagick · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-40183
Same Patch Batch · ImageMagick · 2026-04-13 · 12 CVEs total
| CVE-2026-33901 | 7.5 HIGH | ImageMagick has a Heap Buffer Overflow via MVG decoder |
| CVE-2026-33908 | 7.5 HIGH | ImageMagick is vulnerable to Stack Overflow in DestroyXMLTree() |
| CVE-2026-40312 | 6.2 MEDIUM | ImageMagick: Off-by-One in MSL decoder could result in crash |
| CVE-2026-40169 | 6.2 MEDIUM | ImageMagick: Heap buffer overflow (WRITE) in the YAML and JSON encoders |
| CVE-2026-33900 | 5.9 MEDIUM | ImageMagick has a Heap overflow caused by integer overflow/wraparound in viff encoder on 3 |
| CVE-2026-40311 | 5.5 MEDIUM | ImageMagick: Heap-use-after-free via XMP profile could result in a crash when printing val |
| CVE-2026-40310 | 5.5 MEDIUM | ImageMagick: Heap out-of-bounds write in JP2 encoder |
| CVE-2026-33902 | 5.5 MEDIUM | ImageMagick: Stack Overflow via Recursive FX Expression Parsing |
| CVE-2026-33905 | 5.5 MEDIUM | ImageMagick has an Out-of-Bounds read via -sample operation |
| CVE-2026-33899 | 5.3 MEDIUM | ImageMagick: Heap BufferOverflow write of single zero byte when parsing XML |
| CVE-2026-34238 | 5.1 MEDIUM | ImageMagick: Integer overflow in despeckle operation causes heap buffer overflow on 32-bit |
IV. Related Vulnerabilities
Same product: ImageMagick
- CVE-2026-40312
ImageMagick: Off-by-One in MSL decoder could result in crash - CVE-2026-40311
ImageMagick: Heap-use-after-free via XMP profile could resul - CVE-2026-40310
ImageMagick: Heap out-of-bounds write in JP2 encoder - CVE-2026-40169
ImageMagick: Heap buffer overflow (WRITE) in the YAML and JS - CVE-2026-34238
ImageMagick: Integer overflow in despeckle operation causes
Same vendor: ImageMagick
- CVE-2026-40312
ImageMagick: Off-by-One in MSL decoder could result in crash - CVE-2026-40311
ImageMagick: Heap-use-after-free via XMP profile could resul - CVE-2026-40310
ImageMagick: Heap out-of-bounds write in JP2 encoder - CVE-2026-40169
ImageMagick: Heap buffer overflow (WRITE) in the YAML and JS - CVE-2026-34238
ImageMagick: Integer overflow in despeckle operation causes
Same weakness: CWE-122
- CVE-2026-8261
Squirrel sqobject.cpp Load heap-based overflow - CVE-2026-8213
OSGeo gdal Grid File GDapi.c GDSDfldsrch heap-based overflow - CVE-2026-8212
OSGeo gdal SWapi.c SWSDfldsrch heap-based overflow - CVE-2026-42309
Pillow: Heap buffer overflow with nested list coordinates - CVE-2026-45130
Vim: Heap Buffer Overflow in spell file loading
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