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CVE-2026-86422— ImageMagick before 7.1.2-30 Path Policy TOCTOU Symlink Race

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 在 7.1.2-30 版本之前存在一个时间检查-时间使用（time-of-check-time-of-use）漏洞，位于 Windows 平台上的路径策略执行环节。攻击者可以利用符号链接的竞争条件（race condition），在策略验证和文件访问之间替换符号链接，从而绕过读取或写入限制，进而读写策略中禁止访问的文件。

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-2026-86422

Vulnerability Information
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Vulnerability Title
ImageMagick before 7.1.2-30 Path Policy TOCTOU Symlink Race
Source: CVE Program / CVE List V5
Vulnerability Description
ImageMagick before 7.1.2-30 contains a time-of-check-time-of-use vulnerability in path policy enforcement on Windows that allows attackers to bypass read or write restrictions by exploiting symlink race conditions. Attackers can swap symlinks between policy validation and file access to read or write policy-denied files.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
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-2026-86422

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III. Intelligence Information for CVE-2026-86422

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Vendor Advisories for CVE-2026-86422 (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-2026-86425 3.3 LOW ImageMagick before 7.1.2-30 Heap-use-after-free via Layer
CVE-2026-86423 3.3 LOW ImageMagick before 7.1.2-30 Heap-use-after-free via GetList
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-59

V. Comments for CVE-2026-86422

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