CVE-2026-92705

Aegisub executes arbitrary code through automatically loaded Automation scripts

7.8 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.13%Unchanged since Oct 10, 2026

What each source reports

CVE List Score used 7.8

Aegisub executes arbitrary code through automatically loaded Automation scripts

Record: CVE-2026-92705
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-158, CWE-829
Updated: 2026-11-02

EUVDEUVD-2026-95988 7.8

Record: EUVD-2026-95988
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

NVD 7.8

Record: CVE-2026-92705
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-158, CWE-829
Updated: 2026-11-02

OSV 7.8

Aegisub executes arbitrary code through automatically loaded Automation scripts

Record: CVE-2026-92705
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-158, CWE-829
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-92705 7.8

Record: DEBIAN-CVE-2026-92705
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-05

OSVUBUNTU-CVE-2026-92705 7.8

Record: UBUNTU-CVE-2026-92705
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

typesettingtools aegisub

Affected packages

Affected packages
Package	Affected	Fixed
`aegisub` Debian:12	All versions, plus listed versions 3.2.2+dfsg-73.2.2+dfsg-7.13.2.2+dfsg-7.23.2.2+dfsg-7.33.4.2+ds-1 Show 9 moreShow less 3.4.2+ds-23.4.2+ds-33.4.2+ds-43.4.2+ds-53.4.2+ds-5~bpo13+13.5.0~beta-13.5.1-13.5.1-1~exp13.5.1-1~exp2	None known
`aegisub` Debian:13	All versions, plus listed versions 3.2.2+dfsg-7.33.4.2+ds-13.4.2+ds-23.4.2+ds-33.4.2+ds-4 Show 6 moreShow less 3.4.2+ds-53.4.2+ds-5~bpo13+13.5.0~beta-13.5.1-13.5.1-1~exp13.5.1-1~exp2	None known
`aegisub` Debian:14	before 3.5.1-1, plus listed versions 3.2.2+dfsg-7.33.4.2+ds-13.4.2+ds-23.4.2+ds-33.4.2+ds-4 Show 5 moreShow less 3.4.2+ds-53.4.2+ds-5~bpo13+13.5.0~beta-13.5.1-1~exp13.5.1-1~exp2	3.5.1-1
`aegisub` Ubuntu:16.04:LTS	All versions, plus listed versions 3.2.2+dfsg-23.2.2+dfsg-3	None known
`aegisub` Ubuntu:20.04:LTS	All versions, plus listed versions 3.2.2+dfsg-4build13.2.2+dfsg-53.2.2+dfsg-5ubuntu13.2.2+dfsg-5ubuntu23.2.2+dfsg-5ubuntu3	None known
`aegisub` Ubuntu:24.04:LTS	All versions, plus listed versions 3.2.2+dfsg-7build23.2.2+dfsg-7.13.2.2+dfsg-7.1build13.2.2+dfsg-7.1build2	None known
`aegisub` Ubuntu:26.10	All versions, plus listed versions 3.4.2+ds-33.4.2+ds-43.4.2+ds-5	None known
`aegisub` Ubuntu:26.04:LTS	All versions, plus listed versions 3.2.2+dfsg-7.2ubuntu23.4.2+ds-1build13.4.2+ds-1build23.4.2+ds-23.4.2+ds-3	None known

History

History
Recorded	Changed	Sources
Nov 5, 2026	affected, facts	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-92705 is a high vulnerability (CVSS 7.8) in Typesettingtools Aegisub, published October 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. Fixed in aegisub 3.5.1-1.