CVE-2026-7270 Local privilege escalation via execve()

High 7.8 Published 30 Apr 2026 Updated 10 May 2026

An unprivileged user can exploit a kernel buffer overflow to overwrite execve arguments and gain superuser privileges.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-7270?

CVE-2026-7270 is a high-severity vulnerability in Freebsd Freebsd, published on 30 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An operator precedence bug in the kernel results in a scenario where a buffer overflow causes attacker-controlled data to overwrite adjacent execve(2) argument buffers.

The bug may be exploitable by an unprivileged user to obtain superuser privileges.

Weakness: CWE-783

Which versions are affected by CVE-2026-7270?

It affects 1 product.

Products include Freebsd Freebsd.

How do I fix CVE-2026-7270?

No fix has been published for CVE-2026-7270 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-7270 being exploited?

There is no known exploitation of CVE-2026-7270 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Freebsd Freebsd vulnerabilities

Sources

Also known as GHSA-7jcv-x7mf-56q8.