CVE-2026-56362— ImageMagick - Heap-buffer-overflow Read in GetPixelIndex via OpenPixelCache Metadata Desynchronization
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 4
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ImageMagick | ImageMagick | < 7.1.2-15 | affected |
7.1.2-15 | unaffected | ||
< 6.9.13-40 | affected | ||
6.9.13-40 | unaffected |
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I. Basic Information for CVE-2026-56362
Vulnerability Information
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Vulnerability Title
ImageMagick - Heap-buffer-overflow Read in GetPixelIndex via OpenPixelCache Metadata Desynchronization
Source: NVD (National Vulnerability Database)
Vulnerability Description
ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
ImageMagick 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ImageMagick是ImageMagick团队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之前版本存在缓冲区错误漏洞，该漏洞源于OpenPixelCache在像素缓存内存分配之前更新图像通道元数据导致GetPixelIndex函数中存在堆缓冲区越界读取，攻击者可触发内存和磁盘分配失败造成堆缓冲区越界读取影响任何调用GetPixelIndex的写入器。
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 | 0 ~ 7.1.2-15 | - | |
| ImageMagick | ImageMagick | 0 ~ 6.9.13-40 | - |
II. Public POCs for CVE-2026-56362
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-56362 (2)
IV. Related Vulnerabilities
Same product: ImageMagick
- CVE-2026-61870
ImageMagick before 7.1.2-26 Memory Leak via VIFF Encoder - CVE-2026-61858
ImageMagick before 7.1.2-26 Policy Bypass via APNG encoder - CVE-2026-61861
ImageMagick before 7.1.2-26 Use-After-Free in FormatMagickCa - CVE-2026-61857
ImageMagick before 7.1.2-26 Heap Use-After-Free via XMP - CVE-2026-61465
ImageMagick before 7.1.2-26 Memory Allocation Policy Bypass
Same vendor: ImageMagick
- CVE-2026-61870
ImageMagick before 7.1.2-26 Memory Leak via VIFF Encoder - CVE-2026-61858
ImageMagick before 7.1.2-26 Policy Bypass via APNG encoder - CVE-2026-61861
ImageMagick before 7.1.2-26 Use-After-Free in FormatMagickCa - CVE-2026-61857
ImageMagick before 7.1.2-26 Heap Use-After-Free via XMP - CVE-2026-61465
ImageMagick before 7.1.2-26 Memory Allocation Policy Bypass
Same weakness: CWE-125
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FreeRDP planar_decompress_plane_rle_only: heap OOB read — in - CVE-2026-14461
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Apache IoTDB C++ client: Out-of-bounds reads in C++ client T - CVE-2026-11404
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V. Comments for CVE-2026-56362
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