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CVE-2026-55577— ImageMagick: Heap Buffer Overflow in ImageMagick MVG decoder

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存在安全漏洞，该漏洞源于MVG解码器中的堆缓冲区溢出，在处理特制图像时可能导致越界写入。以下版本受到影响：7.1.2-26之前版本和6.9.13-51之前版本。

CVSS 5.9 · Medium EPSS 0.23% · P12

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 2

VendorProduct Version RangeStatus
ImageMagick ImageMagick >= 7.0.1-0, < 7.1.2-26 affected
< 6.9.13-51 affected
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I. Basic Information for CVE-2026-55577

Vulnerability Information
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Vulnerability Title
ImageMagick: Heap Buffer Overflow in ImageMagick MVG decoder
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 6.9.13-51 and 7.1.2-26, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when processing a crafted image. This issue has been fixed in versions 6.9.13-51 and 7.1.2-26.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
ImageMagick 异常处理不当漏洞
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存在安全漏洞，该漏洞源于MVG解码器中的堆缓冲区溢出，在处理特制图像时可能导致越界写入。以下版本受到影响：7.1.2-26之前版本和6.9.13-51之前版本。
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 >= 7.0.1-0, < 7.1.2-26 -

II. Public POCs for CVE-2026-55577

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III. Intelligence Information for CVE-2026-55577

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Vendor Advisories for CVE-2026-55577 (1)

Same Patch Batch · ImageMagick · 2026-07-01 · 8 CVEs total

CVE-2026-53466 6.5 MEDIUM ImageMagick: Heap Buffer Over-Read in XCF decoder due to integer conversion overflow
CVE-2026-55510 5.5 MEDIUM ImageMagick: Use-After-Free in crafted 8BIM when identifying an image
CVE-2026-55597 5.5 MEDIUM ImageMagick: Heap Buffer Over-Write in JP2 encoder when due to incorrect handling of argum
CVE-2026-55628 5.5 MEDIUM ImageMagick: Policy Bypass in concatenate operation due to missing checks
CVE-2026-53467 5.3 MEDIUM ImageMagick: Information Disclosure in MNG decoder because allocated memory is left unchan
CVE-2026-55594 5.3 MEDIUM ImageMagick: Stack Overflow in MVG decoder due to missing depth check.
CVE-2026-55595 4.7 MEDIUM ImageMagick: Infinite Loop in connected-components when providing invalid arguments

IV. Related Vulnerabilities

Same product: ImageMagick
Same vendor: ImageMagick
Same weakness: CWE-754

V. Comments for CVE-2026-55577

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