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CVE-2026-86423— ImageMagick before 7.1.2-30 Heap-use-after-free via GetList

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 7.1.2-30 及 6.9.13-55 之前的 6.9.x 版本中，PerlMagick 的 GetList 方法存在堆内存释放后使用（heap-use-after-free）漏洞。精心构造的对 GetList 方法的调用可触发该释放后使用问题，导致程序崩溃（拒绝服务）。

CVSS 3.3 · Low

Affected Version Matrix 4

VendorProduct Version RangeStatus
ImageMagick ImageMagick < 7.1.2-30 affected
7.1.2-30 unaffected
< 6.9.13-55 affected
6.9.13-55 unaffected
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I. Basic Information for CVE-2026-86423

Vulnerability Information
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Vulnerability Title
ImageMagick before 7.1.2-30 Heap-use-after-free via GetList
Source: CVE Program / CVE List V5
Vulnerability Description
ImageMagick before 7.1.2-30 and 6.9.x before 6.9.13-55 contains a heap-use-after-free vulnerability in the GetList method of PerlMagick. A crafted call to the GetList method can trigger the use-after-free, resulting in a crash (denial of service).
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
释放后使用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ImageMagick ImageMagick 0 ~ 7.1.2-30 -
ImageMagick ImageMagick 0 ~ 6.9.13-55 -

II. Public POCs for CVE-2026-86423

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III. Intelligence Information for CVE-2026-86423

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Vendor Advisories for CVE-2026-86423 (2)

Same Patch Batch · ImageMagick · 2026-09-07 · 6 CVEs total

CVE-2026-86420 3.7 LOW ImageMagick before 7.1.2-30 Denial of Service Memory Budget
CVE-2026-86421 3.7 LOW ImageMagick before 7.1.2-30 Memory Leak via MSL decoder
CVE-2026-86422 3.3 LOW ImageMagick before 7.1.2-30 Path Policy TOCTOU Symlink Race
CVE-2026-86425 3.3 LOW ImageMagick before 7.1.2-30 Heap-use-after-free via Layer
CVE-2026-86424 2.5 LOW ImageMagick before 7.1.2-30 Path Traversal via TOCTOU Symlink Race

IV. Related Vulnerabilities

Same product: ImageMagick
Same vendor: ImageMagick
Same weakness: CWE-416

V. Comments for CVE-2026-86423

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