CVE-2026-40200CWE-670

An issue was discovered in musl libc 0.7.10 through 1.2.6

High · published April 10, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
6.2
In the wild
Unconfirmed
What it is

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).

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00171 · 6.2th percentile
Weakness
CWE-670 · Always-Incorrect Control Flow Implementation
Published
2026-04-10T00:00Z
EPSS history
Timeline
  • 10 APR 00:00Z
    An issue was discovered in musl libc 0.7.10 through 1.2.6
    cvelistv5