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CVE-2026-40200

HIGH
8.1
CVSS Score
Published: April 10, 2026 at 12:00 AM UTC
Updated: June 17, 2026 at 10:44 AM UTC
1 product affected across 1 vendorMusl

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Severity
HIGH8.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Musl· Musl Libc
95%
0.7.10 ≤ v ≤ 1.2.60.7.10

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Source: cverecord
https://musl.libc.org/releases.html
Source: cverecord
https://www.openwall.com/lists/oss-security/2026/04/10/13
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/04/10/13

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHmitre
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-670

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