CVE-2018-6916: FreeBSD vulnerability

CVE-2018-6916: In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p7, 10.4-STABLE, 10.4-RELEASE-p7, and 10.3-RELEASE-p28, the ker...

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p7, 10.4-STABLE, 10.4-RELEASE-p7, and 10.3-RELEASE-p28, the kernel does not properly validate IPsec packets coming from a trusted host. Additionally, a use-after-free vulnerability exists in the IPsec AH handling code. This issue could cause a system crash or other unpredictable results.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 17, 2024, 02:21 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2018-6916 is a FreeBSD kernel IPsec flaw. A trusted host could send IPsec traffic that FreeBSD failed to validate correctly, potentially crashing the system or causing unpredictable behavior. Exposure is most relevant for FreeBSD systems using IPsec, especially where they accept IPsec packets from configured trusted hosts. The bundle does not identify non-FreeBSD products as affected. Treat as a priority patching item for FreeBSD systems that use IPsec. Business risk is availability disruption, with uncertainty around broader impact because the public bundle lacks CVSS and exploitation evidence. Mitigation focus: Upgrade affected FreeBSD systems to the fixed releases or later.; Review the FreeBSD security advisory for vendor-specific patch instructions.; Prioritize systems using IPsec or handling traffic from trusted IPsec peers..

Prepared: Jun 7, 2026, 14:22 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-2018-6916 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 9, 2018, 15:00 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-18:01CVE reference · vendor-advisory, x_refsource_FREEBSD

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

FreeBSDFreeBSDAll supported versions of FreeBSDListed

Weakness

CWE details

No CWE listed

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