CVE-2026-35547

High

Description

When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.

SeverityHigh

CVSS8.1

Exploit probability—

Product

Freebsd

PublishedApr 30, 2026

First seenApr 30, 2026

Weakness typeCWE-122CWE-122 CWE-130CWE-130

How to fix

Vendor advisories

security.freebsd.org/advisories/FreeBSD-SA-26:17.libnv.asc

Affected products

Product	Affected versions	Fixed in
freebsd freebsd	13.5, 14.3, 14.4, 15.0	—

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