CVE-2026-46521— ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ImageMagick | ImageMagick | < 6.9.13-48 | affected |
< 7.1.2-23 | affected |
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I. Basic Information for CVE-2026-46521
Vulnerability Information
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Vulnerability Title
ImageMagick: Heap Buffer Over-Write in MIFF encoder when using LZMA compression
Source: NVD (National Vulnerability Database)
Vulnerability Description
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, when using LZMA compression in the MIFF encoder an out of bounds write can occur due to a missing check. This issue has been patched in versions 6.9.13-48 and 7.1.2-23.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
缓冲区大小计算不正确
Source: NVD (National Vulnerability Database)
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 6.9.13-48之前版本和7.1.2-23之前版本存在安全漏洞，该漏洞源于在MIFF编码器中使用LZMA压缩时缺少检查，可能导致越界写入。
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 | < 6.9.13-48 | - |
II. Public POCs for CVE-2026-46521
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-46521 (1)
Same Patch Batch · ImageMagick · 2026-06-10 · 28 CVEs total
| CVE-2026-53461 | 7.5 HIGH | ImageMagick: Out-of-bounds write in ICON decoder due to incorrect loop |
| CVE-2026-46520 | 7.5 HIGH | ImageMagick: Heap Buffer Over-Write in IPL decoder when reading multiple images of differe |
| CVE-2026-53460 | 7.5 HIGH | ImageMagick: Policy Bypass can trigger out-of-Memory condition |
| CVE-2026-46522 | 7.5 HIGH | ImageMagick: Infinite Loop in the MIFF decoder can lead to CPU exhaustion |
| CVE-2026-49218 | 7.5 HIGH | ImageMagick: Policy Bypass in DCM decoder could result in image with invalid dimensions |
| CVE-2026-53465 | 6.2 MEDIUM | ImageMagick: Heap Buffer Over-Write in SF3 encoder when writing multi-frame image |
| CVE-2026-46557 | 6.2 MEDIUM | ImageMagick: Stack overflow in fx operation |
| CVE-2026-46523 | 6.2 MEDIUM | ImageMagick: Use-After-Free in MSL decoder. |
| CVE-2026-53462 | 5.9 MEDIUM | ImageMagick: Use-After-Free when allocation in CheckPrimitiveExtent fails |
| CVE-2026-48994 | 5.9 MEDIUM | ImageMagick: Heap Buffer Over-Write in MAT decoder on 32-bit systems |
| CVE-2026-47166 | 5.7 MEDIUM | ImageMagick: Heap Buffer Over-Read in distributed pixel cache server |
| CVE-2026-45359 | 5.7 MEDIUM | ImageMagick: Out-of-Bounds Read in connected components when the user supplies an invalid |
| CVE-2026-48734 | 5.5 MEDIUM | ImageMagick: Stack Overflow in MVG decoder |
| CVE-2026-48724 | 5.5 MEDIUM | ImageMagick: Heap Buffer Underwrite in Floyd-Steinberg depth dithering |
| CVE-2026-49219 | 5.5 MEDIUM | ImageMagick: Policy Bypass can read disallowed files |
| CVE-2026-45664 | 5.3 MEDIUM | ImageMagick: Policy Bypass in MNG coder could |
| CVE-2026-45031 | 5.3 MEDIUM | ImageMagick: Policy Bypass in PSD decoder |
| CVE-2026-45358 | 5.3 MEDIUM | ImageMagick: Out-of-Bounds Read of a single byte in meta encoder |
| CVE-2026-45624 | 5.1 MEDIUM | ImageMagick: Heap Buffer Over-Read of a 4 bytes in distort operation. |
| CVE-2026-42326 | 5.1 MEDIUM | ImageMagick: Heap Buffer Over-Read in IPTC encoder |
Showing top 20 of 28 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: ImageMagick
- CVE-2026-53465
ImageMagick: Heap Buffer Over-Write in SF3 encoder when writ - CVE-2026-53464
ImageMagick: Memory Leak in wand option parser when providin - CVE-2026-53463
ImageMagick: Null Pointer Dereference in distort operation w - CVE-2026-53462
ImageMagick: Use-After-Free when allocation in CheckPrimitiv - CVE-2026-53461
ImageMagick: Out-of-bounds write in ICON decoder due to inco
Same vendor: ImageMagick
- CVE-2026-53465
ImageMagick: Heap Buffer Over-Write in SF3 encoder when writ - CVE-2026-53464
ImageMagick: Memory Leak in wand option parser when providin - CVE-2026-53463
ImageMagick: Null Pointer Dereference in distort operation w - CVE-2026-53462
ImageMagick: Use-After-Free when allocation in CheckPrimitiv - CVE-2026-53461
ImageMagick: Out-of-bounds write in ICON decoder due to inco
Same weakness: CWE-131
V. Comments for CVE-2026-46521
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