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CVE-2026-86424— ImageMagick before 7.1.2-30 Path Traversal via 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 及 6.9.13-55 版本之前存在一个检查时间与使用时间（TOCTOU，Time-Of-Check-Time-Of-Use）漏洞，该漏洞存在于视频解码器中，允许攻击者通过符号链接交换（symlink swaps）来绕过路径策略的写入限制。攻击者可以在策略校验时（检查时点）与文件写入操作（使用时点）之间替换符号链接，从而将文件写入策略所禁止的位置。

CVSS 2.5 · Low

Possible ATT&CK Techniques 2 AI

T1078 · Valid Accounts T1561 · Disk Wipe

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-2026-86424

Vulnerability Information
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Vulnerability Title
ImageMagick before 7.1.2-30 Path Traversal via TOCTOU Symlink Race
Source: CVE Program / CVE List V5
Vulnerability Description
ImageMagick before 7.1.2-30 and 6.9.13-55 contains a time-of-check-time-of-use (TOCTOU) vulnerability in the video decoder that allows attackers to bypass path policy write restrictions via symlink swaps. An attacker can replace a symlink between policy validation (check-time) and the file write operation (use-time) to write to policy-denied locations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/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-2026-86424

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-86424

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Vendor Advisories for CVE-2026-86424 (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-2026-86423 3.3 LOW ImageMagick before 7.1.2-30 Heap-use-after-free via GetList

IV. Related Vulnerabilities

Same product: ImageMagick
Same vendor: ImageMagick
Same weakness: CWE-59

V. Comments for CVE-2026-86424

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