CVE-2011-1739: Freebsd

Medium severity, CVSS 4.3. EPSS: 1.3% chance of exploitation in the next 30 days.

The makemask function in mountd.c in mountd in FreeBSD 7.4 through 8.2 does not properly handle a -network field specifying a CIDR block with a prefix length that is not an integer multiple of 8, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances via an NFS mount request.

Affected products

• Freebsd Freebsd: version 7.4 only; version 8.0 only; version 8.1 only; version 8.2 only

Published 2011-05-03. Last modified 2026-06-16.