Vulnerability in FreeBSD

CVE-2007-2242

The IPv6 protocol allows remote attackers to cause a denial of service via crafted IPv6 type 0 route headers (IPV6_RTHDR_TYPE_0) that create network amplification between two routers.

Published 2007-04-25 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 7.8 (High). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.050 (92.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.050 · newest: 0.050 · change: 0.000

Affected products

FreeBSD — versions 6.2
Ietf Ipv6
NetBSD — versions 3.1
OpenBSD — versions 3.9, 4.0

References

security.freebsd.org/advisories/FreeBSD-SA-07:03.ipv6.asc (vendor-advisory)
secunia.com/advisories/24978 (Patch, Vendor Advisory, third-party-advisory)
secunia.com/advisories/26703 (third-party-advisory)
www.redhat.com/support/errata/RHSA-2007-0347.html (vendor-advisory)
secunia.com/advisories/25770 (third-party-advisory)
secunia.com/advisories/26664 (third-party-advisory)
www.novell.com/linux/security/advisories/2007_51_kernel.html (vendor-advisory)
www.securityfocus.com/archive/1/467939/30/6690/threaded (mailing-list)
secunia.com/advisories/28806 (third-party-advisory)
www.securityfocus.com/bid/23615 (Patch, vdb-entry)