CVE-2018-6916

highpriority · track · 40EPSS 0.021 · 81 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.09% (81st) EPSS

CVSS 9 · high

Is it mine?

44 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9–9.8

v2.09highAV:N/AC:L/Au:N/C:P/I:P/A:Cprimary · NVD / NIST USexploitability 10 · impact 8.5

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USprimaryCWE-416US

affected products (44)

Products and version ranges known to be affected.

FreeBSD FreeBSD≤ All supported versions of FreeBSDenisa_euvdEU
FreeBSD Project FreeBSD≤ 10.3 p28fstec_bduRU
FreeBSD Project FreeBSD≤ 10.4fstec_bduRU
FreeBSD Project FreeBSD≤ 10.4 p7fstec_bduRU
FreeBSD Project FreeBSD11.0 → 11.1fstec_bduRU
Juniper Networks Inc. JunOS≤ 17.2X75-D110fstec_bduRU
Juniper Networks Inc. JunOS≤ 16.1R7-S7fstec_bduRU
Juniper Networks Inc. JunOS≤ 17.1R3-S2fstec_bduRU
Juniper Networks Inc. JunOS≤ 15.1X49-D200fstec_bduRU
Juniper Networks Inc. JunOS≤ 18.4R1-S5fstec_bduRU
Juniper Networks Inc. JunOS≤ 15.1R7-S6fstec_bduRU
Juniper Networks Inc. JunOS≤ 17.1R2-S11fstec_bduRU
Juniper Networks Inc. JunOS≤ 15.1X53-D593fstec_bduRU
Juniper Networks Inc. JunOS≤ 19.1R1-S4fstec_bduRU
Juniper Networks Inc. JunOS≤ 17.2X75-D44fstec_bduRU
Juniper Networks Inc. JunOS≤ 19.1R3fstec_bduRU
Juniper Networks Inc. JunOS≤ 18.3R1-S7fstec_bduRU
Juniper Networks Inc. JunOS≤ 18.4R2-S3fstec_bduRU
Juniper Networks Inc. JunOS≤ 19.3R3fstec_bduRU
Juniper Networks Inc. JunOS≤ 17.4R2-S9fstec_bduRU

showing 20 of 44

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2018-03-09modified 2026-06-17

related (12,235)

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+12230 more

references (6)

External citations — patches, advisories, analysis.

https://www.auscert.org.au/bulletins/ESB-2020.1271/cnnvd
https://www.freebsd.org/Patchcnnvd
http://www.securitytracker.com/id/1040460 enisa_euvd
https://www.freebsd.org/security/advisories/FreeBSD-SA-18:01.ipsec.asc enisa_euvd
http://www.securitytracker.com/id/1040460Third Party AdvisoryVDB Entrynvd
https://www.freebsd.org/security/advisories/FreeBSD-SA-18:01.ipsec.ascPatchVendor Advisorynvd

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