CVE-2011-2393: n/a vulnerability

CVE-2011-2393: The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in FreeBSD, NetBSD, and possibly othe...

The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in FreeBSD, NetBSD, and possibly other BSD-based operating systems allows remote attackers to cause a denial of service (CPU consumption and device hang) by sending many Router Advertisement (RA) messages with different source addresses, a similar vulnerability to CVE-2010-4670.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 20:32 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE describes a denial-of-service weakness in IPv6 Neighbor Discovery handling. A flood of Router Advertisement messages with changing source addresses could consume CPU and hang affected BSD systems. The supplied sources identify FreeBSD and NetBSD, with other BSD-based systems only listed as possible. Likely exposure is BSD-based hosts or network appliances running affected FreeBSD or NetBSD IPv6 stacks, especially where IPv6 Router Advertisements can reach the interface. The bundle does not provide affected versions, CPEs, or confirmed non-BSD products. Treat this as a targeted availability risk rather than a data theft issue. Prioritize internet-facing or operationally critical BSD-based systems, but expect validation work because the public record lacks precise affected versions and fixes. Mitigation focus: Check FreeBSD and NetBSD advisories for affected versions and fixes.; Apply vendor patches or configuration guidance when confirmed.; Inventory BSD-based systems with IPv6 enabled on reachable interfaces..

Prepared: Jun 27, 2026, 17:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 2, 2012, 17:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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