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CVE-2026-7270

HighPublished

Local privilege escalation via execve()

Published: Apr 30, 2026
Updated: May 10, 2026
Assigning CNA: freebsd
Evidence observed: Aug 25, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

0.2%

Low · next 30 days

Percentile: 7.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

freebsd-CVE-2026-7270Exploit
CVE-2026-7270 FreeBSD local privilege escalation via exec_args_adjust_args OOB memmove

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