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CVE-2026-92705— Aegisub executes arbitrary code through automatically loaded Automation scripts

Quick assessment

Affected
TypesettingTools Aegisub
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.

Aegisub 是一款跨平台的先进字幕编辑器。在版本 3.2.0 至 3.4.2 中，Aegisub 会自动加载 字幕项目中由 （自动化脚本）元数据所引用的自动化脚本，而无需确认用户是否信任这些脚本或其作者。攻击者可以分发一个经过精心构造的 文件，其中包含对被引用的恶意自动化脚本的引用；用户打开该 文件时，将自动以 Aegisub 进程的权限执行任意代码。此外，在版本 3.4.0 至 3.4.2 中，由于扩展名验证与文件系统操作中对嵌入式 字符的处理不一致，进一步允许精心构造的 多态文件作为单文件变体引用并自我执行

CVSS 7.8 · High
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I. Basic Information for CVE-2026-92705

Vulnerability Information
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Vulnerability Title
Aegisub executes arbitrary code through automatically loaded Automation scripts
Source: CVE Program / CVE List V5
Vulnerability Description
Aegisub is a cross-platform advanced subtitle editor. From 3.2.0 to 3.4.2, Aegisub automatically loads Automation scripts referenced by `Automation Scripts` metadata in `ASS` subtitle projects without asking whether the user trusts the scripts or their authors. An attacker can distribute a crafted `ASS` file together with a referenced malicious Automation script, and opening the `AS`  file executes arbitrary code with the privileges of the Aegisub process. From 3.4.0 to 3.4.2, inconsistent handling of embedded `NUL` characters between extension validation and filesystem operations additionally allows a crafted `ASS/Lua` polyglot to reference and execute itself as a single-file variant. The vulnerability is fixed in Aegisub 3.5.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空字节或NULL字符转义处理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TypesettingTools Aegisub >= 3.2.0, < 3.5.0 -

II. Public POCs for CVE-2026-92705

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III. Intelligence Information for CVE-2026-92705

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Other References for CVE-2026-92705 (4)

IV. Related Vulnerabilities

Same weakness: CWE-158

V. Comments for CVE-2026-92705

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