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CVE-2026-56361— ImageMagick - Heap Buffer Overflow via Off-by-One in Morphology Processing

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 7.1.2-19之前版本和6.9.13-44之前版本存在缓冲区错误漏洞，该漏洞源于形态学验证中的差一错误导致越界堆缓冲区读取，攻击者通过提供错误的形态学参数触发堆缓冲区溢出，造成单像素内存访问违规。

CVSS 3.3 · Low EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 4

VendorProduct Version RangeStatus
ImageMagick ImageMagick < 7.1.2-19 affected
7.1.2-19 unaffected
< 6.9.13-44 affected
6.9.13-44 unaffected
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I. Basic Information for CVE-2026-56361

Vulnerability Information
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Vulnerability Title
ImageMagick - Heap Buffer Overflow via Off-by-One in Morphology Processing
Source: CVE Program / CVE List V5
Vulnerability Description
ImageMagick before 7.1.2-19 contains an off-by-one error in morphology validation allowing out-of-bounds heap buffer reads. Attackers can trigger heap buffer overflow by providing incorrect morphology parameters causing single pixel memory access violations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
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 7.1.2-19之前版本和6.9.13-44之前版本存在缓冲区错误漏洞，该漏洞源于形态学验证中的差一错误导致越界堆缓冲区读取，攻击者通过提供错误的形态学参数触发堆缓冲区溢出，造成单像素内存访问违规。
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 ~ 7.1.2-19 -
ImageMagick ImageMagick 0 ~ 6.9.13-44 -

II. Public POCs for CVE-2026-56361

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III. Intelligence Information for CVE-2026-56361

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Vendor Advisories for CVE-2026-56361 (2)

Same Patch Batch · ImageMagick · 2026-06-30 · 6 CVEs total

CVE-2026-56369 3.7 LOW ImageMagick - Information Disclosure via AES-CTR Nonce Reuse in PasskeyEncipherImage
CVE-2026-56365 3.7 LOW ImageMagick - Memory Leak in PNG Encoder via MNG Image Writing
CVE-2026-56363 3.3 LOW ImageMagick - Division by Zero in Binomial Kernel Processing
CVE-2026-56377 3.3 LOW ImageMagick - Policy Bypass via Incorrect Path Validation
CVE-2026-56364 1.9 LOW ImageMagick - Memory Leak in LoadOpenCLDeviceBenchmark() via Malformed XML

IV. Related Vulnerabilities

Same product: ImageMagick
Same vendor: ImageMagick
Same weakness: CWE-125

V. Comments for CVE-2026-56361

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