CVE-2026-40200

Published Apr 10, 2026

Last updated 3 months ago

CVSS high 8.1
C++

Overview

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).
Source
cve@mitre.org
NVD status
Deferred

Risk scores

CVSS 3.1

Type
Secondary
Base score
8.1
Impact score
6
Exploitability score
1.4
Vector string
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity
HIGH

Weaknesses

cve@mitre.org
CWE-670

Social media

Hype score
Not currently trending

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References

Sources include official advisories and independent security research.