CVE-2018-6916

Name: CVE-2018-6916
Creator: NVD / NIST
Published: 2018-03-09T15:29:00.313+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.20%

Last modified Jun 17, 2026

CVE-2018-6916 is a vulnerability of currently unknown severity. 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. EPSS estimates a 2.20% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

2.20%

80.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Freebsd	Freebsd	>= 11.0, < 11.1	—
Freebsd	Freebsd	10.3	P28
Freebsd	Freebsd	10.4	—

References

http://www.securitytracker.com/id/1040460Third Party Advisory, VDB Entry
https://www.freebsd.org/security/advisories/FreeBSD-SA-18:01.ipsec.ascPatch, Vendor Advisory
http://www.securitytracker.com/id/1040460Third Party Advisory, VDB Entry
https://www.freebsd.org/security/advisories/FreeBSD-SA-18:01.ipsec.ascPatch, Vendor Advisory

Timeline

Published: Mar 9, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6916?

How severe is CVE-2018-6916?

Severity scoring for CVE-2018-6916 is pending analysis. The EPSS model estimates a 2.20% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6916?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6916?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST