CVE-2026-27798— ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images
Quick assessment
Affected
ImageMagick ImageMagick
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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之前版本和6.9.13-40之前版本存在安全漏洞，该漏洞源于使用-wavelet-denoise运算符处理小尺寸图像时存在堆缓冲区过度读取。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-27798
Vulnerability Information
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Vulnerability Title
ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images
Source: CVE Program / CVE List V5
Vulnerability Description
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a heap buffer over-read vulnerability occurs when processing an image with small dimension using the `-wavelet-denoise` operator. Versions 7.1.2-15 and 6.9.13-40 contain a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
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 7.1.2-15之前版本和6.9.13-40之前版本存在安全漏洞，该漏洞源于使用-wavelet-denoise运算符处理小尺寸图像时存在堆缓冲区过度读取。
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 | < 6.9.13-40 | - |
|
II. Public POCs for CVE-2026-27798
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Pages for CVE-2026-27798 (1)
IV. Related Vulnerabilities
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CVE-2026-105083
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CVE-2026-93588
ImageMagick before 7.1.2-31 Null Pointer Dereference via PNM -
CVE-2026-93589
ImageMagick before 7.1.2-31 Division by Zero in FLIF encoder
Same vendor: ImageMagick
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CVE-2026-105083
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CVE-2026-102635
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ImageMagick before 7.1.2-31 Null Pointer Dereference via PNM -
CVE-2026-93589
ImageMagick before 7.1.2-31 Division by Zero in FLIF encoder
Same weakness: CWE-125
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V. Comments for CVE-2026-27798
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