Command injection in FreeBSD - CVE-2026-45255
Published: May 21, 2026
Vulnerability identifier: #VU132011
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-45255
CWE-ID: CWE-77
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: FreeBSD Foundation
Affected software:
FreeBSD
FreeBSD
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to command injection in Wi-Fi network name handling in bsdinstall and bsdconfig when scanning for nearby Wi-Fi networks. A remote attacker can create an access point with a specially crafted network name to execute arbitrary code.
User interaction is required to initiate a Wi-Fi scan, but the malicious network does not need to be selected.
How to mitigate CVE-2026-45255
Install security update from vendor's website.