CVE-2026-92705

aegisub: Aegisub is a cross-platform advanced subtitle editor

CVE-2026-92705 is fixed in aegisub on 1 platform by DEBIAN-CVE-2026-92705 (version 3.5.1-1), released November 5, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0013
2nd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
aegisub · Debian 14 3.5.1-1 DEBIAN-CVE-2026-92705 Nov 5, 2026

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