CVE-2018-6923: FreeBSD vulnerability

CVE-2018-6923: In FreeBSD before 11.1-STABLE, 11.2-RELEASE-p2, 11.1-RELEASE-p13, ip fragment reassembly code is vulnerable...

In FreeBSD before 11.1-STABLE, 11.2-RELEASE-p2, 11.1-RELEASE-p13, ip fragment reassembly code is vulnerable to a denial of service due to excessive system resource consumption. This issue can allow a remote attacker who is able to send an arbitrary ip fragments to cause the machine to consume excessive resources.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 23:16 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2018-6923 is a FreeBSD network-stack denial-of-service issue. A remote attacker able to send crafted IP fragments could make an affected machine consume excessive resources, potentially disrupting availability. The sources do not describe data theft, code execution, or active exploitation. Exposure is most relevant for FreeBSD systems that can receive untrusted IP traffic, especially internet-facing servers, gateways, firewalls, or network appliances based on affected FreeBSD versions. Treat this as an availability risk for exposed FreeBSD infrastructure. It should be patched in normal security maintenance, with faster handling for systems supporting critical services or public network paths. Mitigation focus: Apply the FreeBSD security update or upgrade to a fixed release level.; Prioritize internet-facing FreeBSD hosts and network-edge systems.; Check FreeBSD-SA-18:10 for vendor-approved remediation details..

Prepared: Jun 7, 2026, 05:35 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

Conservative CVE-to-ATT&CK context

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CVE-2018-6923 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 4, 2018, 18:00 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

2Source 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
FreeBSD-SA-18:10CVE reference · vendor-advisory, x_refsource_FREEBSD

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

FreeBSDFreeBSDAll supported versions of FreeBSD.Listed

Weakness

CWE details

No CWE listed

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