CVE-2026-25794— ImageMagick has heap-buffer-overflow via signed integer overflow in `WriteUHDRImage` when writing UHDR images with large dimensions
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I. Basic Information for CVE-2026-25794
Vulnerability Information
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Vulnerability Title
ImageMagick has heap-buffer-overflow via signed integer overflow in `WriteUHDRImage` when writing UHDR images with large dimensions
Source: NVD (National Vulnerability Database)
Vulnerability Description
ImageMagick is free and open-source software used for editing and manipulating digital images. `WriteUHDRImage` in `coders/uhdr.c` uses `int` arithmetic to compute the pixel buffer size. Prior to version 7.1.2-15, when image dimensions are large, the multiplication overflows 32-bit `int`, causing an undersized heap allocation followed by an out-of-bounds write. This can crash the process or potentially lead to an out of bounds heap write. Version 7.1.2-15 contains a patch.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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 输入验证错误漏洞
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 7.1.2-15之前版本存在输入验证错误漏洞，该漏洞源于WriteUHDRImage函数中整数乘法溢出导致堆分配不足和越界写入，可能导致进程崩溃或越界堆写入。
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 | < 7.1.2-15 | - |
II. Public POCs for CVE-2026-25794
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|---|
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Same Patch Batch · ImageMagick · 2026-02-24 · 32 CVEs total
| CVE-2026-25965 | 8.6 HIGH | ImageMagick's policy bypass through path traversal allows reading restricted content despi |
| CVE-2026-24481 | 7.5 HIGH | ImageMagick has Possible Heap Information Disclosure in PSD ZIP Decompression |
| CVE-2026-25989 | 7.5 HIGH | ImageMagick has integer overflow or wraparound and incorrect conversion between numeric ty |
| CVE-2026-25985 | 7.5 HIGH | Memory allocation with excessive without limits in the internal SVG decoder |
| CVE-2026-24485 | 7.5 HIGH | ImageMagick: Infinite loop vulnerability when parsing a PCD file |
| CVE-2026-25968 | 7.4 HIGH | ImageMagick has MSL attribute stack buffer overflow that leads to out of bounds write. |
| CVE-2026-25967 | 7.4 HIGH | ImageMagick has stack buffer overflow in FTXT reader via oversized integer field |
| CVE-2026-26284 | 6.5 MEDIUM | ImageMagick has heap overflow in pcd decoder that leads to out of bounds read. |
| CVE-2026-25897 | 6.5 MEDIUM | ImageMagick has heap overflow in sun decoder on 32-bit systems that can result in out of b |
| CVE-2026-25898 | 6.5 MEDIUM | Imagemagick Has Global Buffer Overflow (OOB Read) via Negative Pixel Index in UIL and XPM |
| CVE-2026-25982 | 6.5 MEDIUM | ImageMagick Has Heap Out-of-Bounds Read in DCM Decoder (ReadDCMImage) |
| CVE-2026-26066 | 6.2 MEDIUM | ImageMagick has infinite loop when writing IPTCTEXT leads to denial of service via crafted |
| CVE-2026-26283 | 6.2 MEDIUM | ImageMagick has possible infinite loop in JPEG encoder when using `jpeg:extent` |
| CVE-2026-25971 | 6.2 MEDIUM | ImageMagick's MSL: Stack overflow in ProcessMSLScript |
| CVE-2026-25966 | 5.9 MEDIUM | ImageMagick's Security Policy Bypass through config/policy-secure.xml via "fd handler" lea |
| CVE-2026-25797 | 5.7 MEDIUM | ImageMagick vulnerable to Code injection via PostScript header in ps coders |
| CVE-2026-25987 | 5.3 MEDIUM | ImageMagick has heap buffer over-read in MAP image decoder |
| CVE-2026-26983 | 5.3 MEDIUM | ImageMagick: Invalid MSL <map> can result in a use after free |
| CVE-2026-24484 | 5.3 MEDIUM | ImageMagick: Converting multi-layer nested MVG to SVG can cause DoS |
| CVE-2026-25986 | 5.3 MEDIUM | ImageMagick has a heap buffer overflow in YUV 4:2:2 decoder |
Showing top 20 of 32 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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ImageMagick: Heap buffer overflow (WRITE) in the YAML and JS
Same vendor: ImageMagick
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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-2026-40183
ImageMagick: Heap buffer overflow when encoding JXL image wi - CVE-2026-40169
ImageMagick: Heap buffer overflow (WRITE) in the YAML and JS
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