Buffer overflow in FreeBSD - CVE-2026-3038
Published: February 25, 2026
Vulnerability identifier: #VU123246
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-3038
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: FreeBSD Foundation
Affected software:
FreeBSD
FreeBSD
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when handling sockaddr structures within the rtsock_msg_buffer() function in route(4). A local user can trigger memory corruption and execute arbitrary code with root privileges.
How to mitigate CVE-2026-3038
Install updates from vendor's website.