# CVE-2025-47154

## Summary

- **CVE ID:** CVE-2025-47154
- **Severity:** CRITICAL
- **CVSS Score:** 9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
- **CWE:** CWE-820
- **Published:** May 1, 2025
- **Last Modified:** Mar 13, 2026

## Description

LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says "Ladybird is in a pre-alpha state, and only suitable for use by developers."

## Affected Products

- Ladybird — Ladybird (0)

## References

- [CNA](https://news.ycombinator.com/item?id=43852096)
- [CNA](https://jessie.cafe/posts/pwning-ladybirds-libjs/)
- [CNA](https://github.com/LadybirdBrowser/ladybird/commit/f5a670421954fc7130c3685b713c621b29516669)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.66%
- **EPSS Percentile:** 49.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._