# CVE-2026-40200

## Summary

- **CVE ID:** CVE-2026-40200
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
- **CWE:** CWE-670
- **Published:** Apr 10, 2026
- **Last Modified:** Apr 14, 2026

## Description

An issue was discovered in musl libc 0.7.10 through 1.2.6. Stack-based memory corruption can occur during qsort of very large arrays, due to incorrectly implemented double-word primitives. The number of elements must exceed about seven million, i.e., the 32nd Leonardo number on 32-bit platforms (or the 64th Leonardo number on 64-bit platforms, which is not practical).

## Affected Products

- musl-libc — musl (0.7.10)

## References

- [CNA](https://musl.libc.org/releases.html)
- [CNA](https://www.openwall.com/lists/oss-security/2026/04/10/13)
- [CVE](http://www.openwall.com/lists/oss-security/2026/04/10/13)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.17%
- **EPSS Percentile:** 6.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._