CVE-2026-45253

CVE-2026-45253: Missing validation in ptrace(PT_SC_REMOTE)

Vendor Freebsd
Product FreeBSD
Weakness CWE-787
Published May 21, 2026
Last update May 22, 2026

CVSS base score

What the vulnerability does

01Description

ptrace(PT_SC_REMOTE) failed to properly validate parameters for the syscall(2) and __syscall(2) meta-system calls. As a result, a user with the ability to debug a process may trigger arbitrary code execution in the kernel, even if the target process has no special privileges. The missing validation allows an unprivileged local user to escalate privileges, potentially gaining full control of the affected system.

Key dates

02Disclosure timeline

May 21, 2026 CVE published
May 22, 2026 Record updated